If you do one thing today, learn to love and approve of yourself. You are perfect just how you are. I don't care what anyone has ever told you, as long as you love yourself, that's all that matters.
One way to change your life is to take a few minutes and meditate. Meditation is just one way to help calm your mind. It's not easy at times, but if you keep doing it, it will get easier.
I'm a life coach in California. Contact me if you have any questions.