The biggest lie I got when I was in my 20s, was when others tell me, "You're so young, and got so much potential."

My mistake? I believed in it.

Young? Youth doesn't mean you have lots of time, so while it's ok to explore different things, always set a time limit to it. If not, the exploration will never end, and you won't have anything concrete to work on by the time you reach 30 (it happens faster than you think).

Potential? Everybody has potential, even a dead corpse - it can be used as fertiliser.