Sounds pretty simple, doesn't it? All you have to do is just show up. But there are so many things that potentially get in the way. Time and planning (or lack thereof). Traffic. Motivation. Intimidation.
No, I'm not talking about the famous rap song by 2Pac, but if you pay attention to the lyrics closely (aside from the violent lines), I bet you can find a few pieces that resonate with you. I know I did.