Believe in yourself

Your brain is like a circuit switch. Once you believe you are something you actually embody it, you embody that feeling.
Being succesful in life is all about having the proper belief system in who you are.Truly believing that you were something unique.That you were something special in that field.If you truly believe inside of you that you are one of the best actors in the world you will be entirely different than if you're like 'I hope I'm good'. Your expressions will be totally different ,your tone of voice,you'll talk in a more convincing fashion,you'll use your natural voice instead of a scripted one, you'll be more emphatic,you'll be more real, more relatable.
Our brain is like a circuit and so if we introduce it with the proper wire you're gonna go straight to your target .If you're unsure about who you are then, your dreams, your goals, they will never become a reality.
Everyone has mental doubts in life, internal conflicts even the most succesful people that you look up to but they don't live their.
It's how you handle those negative thoughts in that exact moment and overwhelm them with positive action and that comes with this up most confidence in yourself.That you can handle this situation trust in yourself that you are better than the moment