Pulling out of the Bulls game

I have a history of pulling out of going places due to my anxiety disorders. Last night I was invited to a Chicago Bulls basketball game and I pulled out at the last minute. I'm trying not to let my anxiety problems dictate what I do with my life but I've been unsuccessful so far. I feel pretty bad about it. My dad always said I was a failure and would amount to nothing and I feel, at the moment, that he may have been right. It's really a downer knowing I pulled out. I have to create a similar situation and instead of pulling out, go through with it.