Many, many people also seem to have a negative attitude about everything.
"I can't do it.", was never in my vocabulary. I learned at a very early age that if I knew in my heart I could do it, I could do it. If I let doubt creep in, I couldn't.
Stop with the defeatest attitudes. You can do this. You are the creator of your own world, you mold it with your thoughts. It will be what you make it, for sure, or no way.