A Different Spin?

I wonder what would happen if I changed my thinking to spin all of my thoughts in a positive manner? Instead of worrying or obsessing on things that have already happened or have not happened yet, remaining present with each moment. It would take a lot of mental focus to stop all of these thoughts. But I'm starting to believe it would be better for my sanity. It's so hard to continually repress my feelings. And why should I? Because I label them as bad or not right? Because maybe somewhere in my past someone was critical of me? What if I told myself, "these are my feelings and it's ok!" These feelings (good or bad) are a part of me. So in denying them, I am essentially denying myself. I am keeping myself inside my concrete wall. What if for once, I started being on my own team? I could be the coach, the talented athlete and the cheerleader! It would be mental and emotional harmony. If I could allow myself to have the feeling, acknowledge it as "thinking" and let it go, my life would be a lot less stressful.