Quarter-life Crisis

Last night I had a friend over. He walked in on me aggressively cleaning my b**g, which has more or less sat in a corner collecting dust for the past year. Then I asked for his opinion on a number of changes I was considering for my apartment. Then I told him I wanted to train for, and ride in, the AIDS Life Cycle next year. Finally I brought up my somewhat irrational fear of being fired from my job, and how although on a personal level I wouldn't be crushed, such a development would suck money-wise. When I realized I'd done nothing for 45 minutes but pick apart my life - even though it's actually a really great one - I figured it's because I'm turning 25 and time isn't making any exceptions for me. What is it I really want? Where do I go for it? And how quickly can I make it happen?