I'll never forget my high school acting teacher, Anthony Abeson, who said, "It starts with the shoes." When I think about a character, it does start with the shoes: What kind would she wear? How would she walk in them? If I'm going to put on a dress for a role - I don't care if it's the hardest dress to put on - I have to put the shoes on first. The physicality leads me to the character.
Study, find all the good teachers and study with them, get involved in acting to act, not to be famous or for the money. Do plays. It's not worth it if you are just in it for the money. You have to love it.
I had a great acting teacher in high school. But I didnt like acting because it took too many people to get the job done. You have to talk to too many people and listen to others opinions. With music, you get a few friends together and just make it.
There is a quote that my acting teacher Stella Adler wrote in her book [The Art of Acting], which I asked her to sign: "The young actor feels some greatness inside themselves that they want to give back to the world." That resonated with me, but I didn't really understand what she was talking about until much later, in the way you surmised that my struggle to become an actor was from being this kind of introverted young boy
I've always remembered something Sanford Meisner, my acting teacher, told us. When you create a character, it's like making a chair, except instead of making someting out of wood, you make it out of yourself. That's the actor's craft - using yourself to create a character.
I started taking lessons in third grade because I thought it was a fun thing to do. Through my acting teacher, I got my manager. That was about 5th grade. So once that happened it kind of clicked that I probably should pursue acting as a career...
The greatest inspiration I draw upon is, is this city (New York) and riding the subway and watching people and I find that's kind of like the best, the best acting teacher. You know, I wonder, like people who have huge celebrity, sometimes I feel bad, should this be one of their methods 'cause I don't know how they can observe life anymore, because they become the observed. So, I, I appreciate that New York can still do that.
Part of an actor's job is to actually adopt the world-view of the character she is playing and to tell the story from that vantage point. If an actor represses large aspects of their personality, they will have a severely limited range and castability. Great actors cultivate effortless access to their subpersonalities. Many acting teachers call this 'freeing your instrument.'