I got good at meditation in college. Good in the sense that I was able to shut my mind down and sit calmly for 30-45 minutes without a whole lot of thought, up to 2 times a day.
If something popped into my mind, I would let it go, and if I couldn't calm down, I just sat through it. If I fell asleep, I fell asleep and tried again the next day.
I didn't become enlightened or anything of the sort. However, I did regularly experience my visual field turn green or blue, then compress into a little ball, and shoot off into the distance. This was a continual thing, a ball forming and shooting off into the distance repeatedly, and when it happened I knew I was into my meditative state.
It took a couple years of consistent practice to be able to get there consistently, however I did get a benefit from it right away and had some good experiences shortly after starting.
It was awesome stuff, and its the one thing I wish I kept practicing.