Think positive!
All of these things you say you can't do or won't happen for you will not happen with that attitude. Thinking negatively will keep you away from getting the things you want in life. The only person who can remove all that negativity out of your life is you.
How do you remove negativity from your life? The most important thing you can do to remove negativity from your life is to have a positive train of thought about every situation. What you think is what will happen. Thinking you can't accomplish anything will prevent you from doing that. Having negativity in your life is a major drawback. You can't accomplish anything without having positive thoughts.
Think positively about everything you want to do and it will come to you. Remove yourself from negative people.