Tell us about a habit you’d like to break. Is there any way it can play a positive role in your life?

The habit of seeing always the glass half empty. I would like to break it and definitely that would play a positive role in my life, but I can’t. I tried. No way. I’m a pessimist. I feel the Murphy law is installed in my life. I need help. I have it in my family but still, the habit is stronger than me. I don’t like it at all. I love optimist positive people. I would like to be one of them. I’m sure breaking this habit of mine would whelp me do a lot of things I’m not doing out of fear to fail. 

Daily Prompt: Breakdown.