“you should enjoy your life now before it’s too late”, said every boomer ever to me. “you should focus on your studies and work hard now, think about the future!” also said by every boomer ever to me.
One should pick priorities. I don’t believe these things are mutually exclusive, but you cannot properly have both at the same time.
Where the line should be drawn? I don’t know and I try not to invest much thought on it. Life by itself is stressing already and worrying whether I’m having “enough fun” is a free call for more anxiety.