I used to be this way, but two things happened: first, I got married, which pushed my bed time closer to 1 a.m. Then, I had a kid, which pushed my wake-up time

I used to be this way, but two things happened: first, I got married, which pushed my bed time closer to 1 a.m. Then, I had a kid, which pushed my wake-up time to 6 a.m. (after several months of completely irregular sleep cycles). This resulted in me going to bed around 10 p.m. most nights due to really needing the sleep. I'm still not a "morning person" now, but I'm comfortable enough with this schedule. If you're interested in changing your schedule (even though it doesn't sound like you need to), I'd recommend slow changes. You can start going to bed a bit earlier (like 10 minutes) every night, and supplement with 2-3 mg melatonin taken 30 minutes before your desired bed time.