First reactions

I wonder how a person changes their first reactions. Often in my life my first reaction to things is to see the problems and negatives. It may be a great idea (even the greatest idea ever). Still I often start listing the problems. I think I can see the potential of some ideas. But my first reaction is not to list those benefits and blessings.
And my initial reaction can get even worse if something disrupts my life. I am convinced that deep within is a belief that I am the center of the world. I deny that I believe this but sometimes...