I think I knew about Bitcoin more than 10 years ago, but don't remember exactly when, it's just that if I could have the belief, patience and also the courage to keep it longer then it would give me more than I ever imagined.
But it's never too late, if you didn't know about Bitcoin ten years ago because only found out about it now, then in the next 10 years there could be much bigger things happening to Bitcoin than everyone predicted, but people still have to pay attention to every risk, that is why following every Bitcoin development is very important if people want to be successful here.