Summary: One of our teachers said that anxiety and excitement come from the same area of the brain, so when you're nervous you can deceive you and push you to feel energized. When I'm about to go on stage I feel like this: excited.

For many, the self-confidence is an extremely volatile concept.
There comes when you're surrounded by people who love you, and after a few beers, and then leaves.
That is a rip-off, because the self-confidence is extremely useful.
It makes you feel more powerful, and at times, this serves to complete the tasks, you promote to school or get you to give a pay rise.
But how do those whose career is based on self-confidence?
Who must keep their nerve in front of hundreds, sometimes thousands of people?
To find out, I talked to a comedian, a life coach, an actress, a singer and a porn star.
SINGER - Kele Okereke
Kele Okereke became famous in the mid-twenty-first century as the frontman for Bloc Party.
In his solo career he has instead released two albums, The Boxer Trick in 2010 and in 2014; the third album, Fatherland, will be released in October this year.
I'm pretty sure of myself, but in private life are different from what you see me on stage.
I did not want to be a singer-there are people who are always singing, even in the house alone, but I started singing with Bloc Party because we had no one else would.
The I lived as a responsibility, for what I did.
I remember very well how nervous I was in those early performances.
It was only after the first album that I realized it was something I could do well and that there were people who liked me.
At the end of the tour for Silent Alarm, I was finally quiet.
Now I only care to be at ease on my terms, on stage.
No need to be Freddie Mercury.
That kind of performance do not like so much, and even a little 'bothers me.
I just finished an acoustic tour in Europe, just me and the guitar, and it was the first time I was so exposed me so well, 'it was not the best for my nerves.
If I give advice, I would say that to retreat into themselves do not get anything.
If you want to eat the omelet you have to break eggs.
Steve McCann is a professional comedian, contributor to Radio TalkRadio and Shoreditch, and presenter McCannn's Power Hour, a weekly radio show on Radio Hoxton.
At first I thought that I would be a shit, as a comedian.
But what I learned early on, and I'd remembered that the young comedians, is that it is very likely that you will not see ever again in the public hall that night.
So no matter what they think or how they react to your performance.
If you do not go as it should, it could be embarrassing at times, but in the long term cares.
The most important thing is to be prepared.
It is the same thing as when a normal person has to make a speech before an audience or present a project at work.
Be prepared, brilliant and you know well what you're talking about.
Or at least act as though you knew all; people will believe you.
Being a comedian is something innate.
I know many people who are sure of themselves but rather die than stand up and speak before an audience.
You must be the one to believe that what you are saying is quite funny because the audience wants to hear.
But it is true that all comedians have insecurities.
Often they take the stage to find their safety-are seeking approval.
For example, I do not listen to criticism or read reviews.
I try to forget everything, and serves a lot.
If I were to give advice to non-comedians, I would say just to have self-confidence.
To pretend or try to be something that you are not only demonstrates that you are insecure, and always after a while 'will be obvious they were crap.
A few years ago I was at a barbecue with my ex, who went to Cambridge.
They all talked about theater, philosophy and literature-things that I had no idea.
I could not blend in the speech, I felt inadequate.
Where I studied people were too busy smoking and fucking, he does not go to the theater.
I went home and I bought a lot of books of art and theater for never having to find more in a similar situation.
Now I know a lot of those things.
PORNSTAR - BUSTY COOKIES
Busty Cookie has been working in the adult entertainment industry since 2009, it has appeared in Playboy and on Babestation.
Recently, he starred in the film Hard Brexxxit Pianne Fagot.
When I was younger I was not very sure of myself, but the work I do has helped me.
At first I did not feel at ease, but he pushed me out of my shell.
It is only this year that I became confident.
At school I was afraid of the crowds, and even the audience, being in the public sent me anxious.
I had to be in a day care program on Red Light Channel, clothed the naked-nothing.
There also were working girls Babestation, and when I showed up they told me, "Well, go and do your best."
It was pretty nerve-wracking, but I finally made the record ratings.
The girl who held the record before me is angry.
On not get too nervous set because there is no public watching me, there is only the camera.
Once, however, I was asked to do a photo shoot for Playboy -a lot more serious and much more frightening.
I was with Megan Coxxx, had to pretend to masturbate.
My advice, if you are unsure of yourself, you can concentrate on yourself and what you're doing.
In porn, they send out of the grace of God with each other.
Once we were shooting and there were two guys who had just seen a more experienced actor doing an excellent performance.
They were intimidated and could not do anything, I saved everything myself with squirting.
We brought home the scene, I squirtato across the desk, anywhere.
I've always been good at sex, I always liked to experiment.
My advice for girls is to love yourself.
Learn to love your body.
If you do not love yourself, you can not love anyone else-even if you're a little 'chubby.
ACTRESS - DORA RUBINSTEIN
Dora Rubinstein is an actress of Newcastle, works with the Young Shakespeare Company and will do Dorothy's part Shit-Faced Showtime: The Wonderful Wizard of Oz.
I think I was a pretty confident person, but the theater schools destroy you and then you rebuild from scratch.
The first day of the dance teacher made us strip away until you have dressed only in tiny shorts and bras and put us in line in front of the mirror.
They happen a lot of things like that in the theater schools, although it is probably not entirely legal.
The shows are all the same-you just repeat what you've tried 100 times.
One of our teachers said that anxiety and excitement come from the same area of the brain, so when you're nervous you can deceive you and push you to feel energized.
When I'm about to go on stage I feel like this: excited.
I recently did two hearings at the Globe and the National Theater, and in similar meetings occasions people you respect, maybe a director who follow since you are little.
It's hard because we have in front of them.
I try to show me for who I am, not to do the robot.
LIFE COACH - LYDIA Amoah
Coach Lyds is a business coach, a mentor and a motivational speaker, with twenty years of experience in the media, public relations and development of the person.
At first I intended as a "confidence coach".
In my personal life there were areas that put a strain on my safety, but I got help and I decided that I'd entered this workplace.
When you've had the same problem, it is easier to see them on others.
I lost my father to seven years.
But it is not easy to see the effects of a fact that until adolescence.
Even in situations where I was that strong, inside I did not feel much.
When you lack security, you do not understand your value.
My therapist helped me a lot, made me feel like he was lifting the metal weight from his shoulders.
My advice is to identify areas in which you are unsure, to focus on those.
Once a client of mine told me that he worked in an open office, next to his boss.
But he had lost confidence in their own ability because there was a colleague that he thought he was better.
I asked him to tell me about himself and the obstacles he had faced in life.
Suddenly, it's like turning on a light and people jumping off of what account were capable of doing.
A lot comes from making comparisons, they compare with others.
You have to respect others and their success, do not go comparing to bring you down.
We need to change the language that we speak of himself.
People think of themselves such terrible things she did not say their worst enemy.
Think about yourself in a more positive light is the first step towards safety.

From Vice