Focus!

As some of you might know, my brother was planning on moving to LA to pursue a career as a poker player. He's not moving there anymore, but he still plans on playing poker as a job. He's the other "smart one" in the family and could've been a doctor if he'd wanted to. And that's where it gets a little depressing. I believe I could've been a doctor too, if that was my desire (it wasn't and still isn't) and if I had some focus. My brother gets bored easily and switches jobs a lot. Both of us get so restless, lazy, and we lack focus. Everytime I've set goals I've been able to meet them. Problem now? I've stopped setting goals. I know what I want to do, but I'm afraid to commit. It's as though I'm setting myself up for failure, making excuses so I can blame something. But even in school I was never able to sit and study. Good thing I was able to coast or I never would've made it! Does anyone think it could be an adult form of ADHD? I seriously don't know why I've been like this my whole life. Even now, I'll spend time reading celebrity gossip when I know I could be so much more productive. I can't even sit still long enough to watch all the movies my supervisor lent me! Or sit down and finish a book. I wish I was like Thinh who can focus his energy and become an expert on so many things! Instead I have a little general knowledge about a little bit of everything (sports excluded) and feel like I will never become an expert on anything....well, maybe an expert on bumming around!