The biggest thing that is keeping you from your dreams, is your own mind. It isn't people, you just let them get to you. If you want it bad enough, you'll stop at nothing and no one to get it.
Never let someone write in your story, it's yours, and yours alone. Don't apologize for letting someone go if they're no longer good for you. Do what's best for you, otherwise you might loose yourself in other peoples problems.
Every time you blink your eyes fixate on the world again. Every time your heart beats it pumps blood to keep you alive; everything we have is for a reason. Love every part of yourself, because look at your assets not your flaws. It'll change the game of life.
Never let someone else opinion on you change the view of yourself. You're here for a reason and someone in the world want you. Your own view of yourself is only what matters.