Oscars usually go to someone actually doing their job - acting. People taking on roles that are different to their natural personality. I personally usually find these performances over exaggerated. Ones that would no doubt be impressive on the stage but are not subtle enough for my tastes on film. I prefer movies where for all intents and purposes the actors are just being themselves and they have been cast as such. Why force someone to act completely out of character when you could just get a different actor who is like that character?
This brings me on to personal development. If you want to be different, you can be right now. Today. The body leads the mind and the mind leads the body. Want to be more confident? Stand up tall, make eye contact longer than usual, speak to everyone you meet. These are not superpowers. Just act the way you want to be and soon you will gravitate towards this.
On the flip side, do not forget your strengths. Do you think that you will continue to be great at the things you are already known for if you are distracted acting at something else? It takes time and energy to think how to be different than your natural style.
What is natural though? Shyness and social awkwardness are learned, not innate. There are many examples of outgoing toddlers not afraid of anything who turn into reclusive teenagers trying to fit in.
For me, as Robert Kiyosaki says, you want to be on the edge of this particular coin. Knowing what side of the coin to use at any particular time. Know what will hold you back if you do not act differently and know what you are best at. Flip the coin as often as needed.