I would be like Jose Canseco. Take steroids... admit to it. Sure you lose all credibility and don't make the hall of fame. However you'll still make plenty of money and you will be remembered, even if it isn't for something good...
Completely kidding, I'm against all drugs so I wouldn't take steroids. I'd go with never making the pros but giving it my best. AAA players get some recognition, they can start successful businesses and stuff. My high school gym teacher played for the Paw Sox. Only got one at bat for the Red Sox in a spring training game and he got a base hit. He coached my high school's baseball team to 3 state titles in 5 years, and now coaches Worcester State's baseball team. He has tons of money, nice house, everything. And he can look himself in the mirror and know he did his best without cheating.