If your existence is all about work, and work goes to shit, then life goes to shit too.
If you live for your hobby, and your hobby hits the wall, then your life crashes too.
If everything else is waiting until you hang with your mates, and your mates fade away, then you fade too.
Betting your drive to get up in the morning on a single path will leave you completely stuck if that one road is blocked.
Don't bet all your happiness and purpose on a single square.
It's fine to lean on one pillar or another at different times in your life, but you'd do well to make sure there's a few others holding up the roof if the first one crumbles.
Yes, rock it out at work, but reserve some evenings and weekends for a hobby too. Sure, enjoy that tight-knit crew, but realize that life eventually changes for them some day as well.
Diversification is resilience in action. It's having something in reserve. It's knowing that everyone, everywhere, doing anything, will eventually suffer setbacks, frustration, and despair. And planning for that by packing a bag with more than just hammers.
It doesn't have to be 33/33/33, but you aren't prepared for the likely life if it's 90/5/5. And it won't help you that one in a hundred can hit glory for a while betting it all on 100/0/0. You'll only ever see their highlight reel, and you'll never see the other ninety-nine who crashed and burned.
人生不需要每个方面都做得很好很平均，但你也未必为 “将大部分精力都投入在某个领域” 做好准备。 不必着眼于那些将所有才华孤注一掷赢得高光的人，那并不会对你产生多大帮助。那些终究是百里挑一的极少数，你只看得到光鲜的特例，但未曾知晓更多的那些溃败的大多数。
Diversify your life.