When you make a decision. follow through with it. Don't let anything interfere with your happiness. If you have negative people trying to get into your life, throw them aside. No amount of effort is worth you being sad. You will have opportunities to become a better person, and it isn't going to be easy, but your life is truly all you have. Live as if you are the only one walking on earth. Nobody will ever know who will stab who in which back. Live as if you are the only persons who can unstersand you.