Bill, thanks for writing this.

For me, what I'v found is that I end up blocking myself in my head. "Why would I get pick me to (insert dream)over anyone else?" It ends up being an insurmountable shadow in my mind.

Eventually what I have to do is just try. Even if I think it's in vain, just try. And for me it starts with just a little. A little bit of effort can show me that there maybe is a chance and then pushes me onward to put even more of my heart into it. 

I think this a very perceptive post that I (and I'm sure other people) have to constantly be reminded of. Thanks for writing this!