Just give your best and be responsible to all things
You need to think wisely and choose the right path to get your ambition which in your life you would not regret anything. Getting ambition is free .. It's always free to dream about life but it matters about how you depict the reality and be ready to accept any challenges in getting that ambition . Through all walks of life I'm sure everyone has ambition. It's how every individual would ask personally but then you can get that answers by yourself and through God's plan for you. Just believe in God and nothing is impossible . :) 

First thing to do is to trust yourself that you can do it, be brave enough to handle the situations because there's so many hindrances in the real world. Don't give up and let God plans guide you in every step of the way. Learn to rise against your problems and don't forget to be humble in the time you reached success.