On things
For the last year or so I've spent a lot of money. I've basically bought whatever I want whenever I want. From this I've learned that things do not make a man happier.
I'm not sadder either. The feeling of "hey, I want to buy this thing to feel better" comes from time to time, but there's nothing left to buy to make my life better. However, I quickly move on from this feeling.
What's surprised me positively is that I immediately go searching for deeper meaning. I either go work, (for working's sake, not getting paid) or go hang out with my family. I must admit it's usually the former.
I've learned that getting the nicest stuff the world has to offer is completely uninteresting. I'm very grateful I had this experience before 30. My heart breaks for people that don't get that feeling until their 40s or 50s. Life is short, don't spend it chasing stuff.
Being told this is the case doesn't help either. I can't tell you money won't get you happiness. I've heard the phrase countless times myself, but didn't understand it until I experienced it.