I have regrets from the past and the future. I can actually predict what I'll miss out on, and I know I won't act on them.
From the past: I didn't visit my grandma when she was dying in the hospital. I never got to tell her that I loved her before she died. Lesson learned - don't be afraid to say your final goodbyes. Someone isn't going to stick around just because you don't say goodbye.
From the future: I don't plan on going to college. I'll be taking some online courses in gaming design, but I'm not going to go to an actual college. I feel like I'm wasting my entire life learning instead of doing. Do you know we spend at least a fifth of our life in school? Another reason is financial. My family is far from rich, and I really don't want a huge debt hanging over my head for the first few years of my working career. And I want to start making money. Having to ask my parents for money is really starting to bother me.
From both: I have stage fright. My voice is actually very good when I don't have a cold (even though that's about 50% of the time), but I dropped out of chorus and I won't sing in front of most people. I weigh around 300 pounds, most of it being from constant allergy problems (caused by allergies, but I haven't been doing a good job trying to get it back down, either), so I'm not very confident in most things. The strange thing is that I see myself as someone completely different when I'm doing stuff, and I only see myself for what I am when I'm the center of attention.