At what point am I less likely to have alcohol affect me negatively?

Basically I’ve been drinking since I was 17, am 28 now. So over a decade of drinking from a young age. I’ve had check up’s and my liver numbers are always good. When should I start to worry? My tolerance is crazy high, however I never get hungover. How do I know it’s too much if it’s not impacting my work, social or family life?