As you get older in life, your ability to generate wealth and accumulate wealth is almost entirely dependent on your ability to suppress your ego. Once you get rid of the idea that no one is paying attention to you, your desire to show off diminishes substantially. Accepting a level of hassle and nonsense when it's just an inevitable part of life has been helpful for me as I've gotten older.
There are only a handful of financial rules, ideas, and observations that really move the needle -- and explain the majority of what you need to know to do better with your money.
I could have narrowed this down to 10, but I had fun with this thought experiment, so here are my top 30 rules of the money game.