I try to get exactly 8 hours. Most nights I've only been managing 6 and it's really starting to show. Work itself isn't tough for me... what's hard is working

I try to get exactly 8 hours. Most nights I've only been managing 6 and it's really starting to show. Work itself isn't tough for me... what's hard is working all day, and then only having a few hours to catch up with friends in the evening. I'm definitely no night owl though. Without someone working to keep me up I'm crashed out by 1am.