My experience in wisdom. Here is one of recent situations.
In transport, owner of bus is retired man. Constantly ha problems with competitors such as ,,stealing" fares, ,,setting up police" (so they check him up often), backstabbing etc etc... He is retired, no kids, has few buses, two companies, and even he is 65+ more years, he still continues to drive because he has nothing else to do, he spend whole life on wheels. he deeply believes that me must drive whole life. And all of that craps that he must be involved. You see, I do not defend anyone for that behavior, but I understand young people doing this, young, has no patience, wants all for himself, and he can take and survive constantly shits, courts, setups and such... But old retired man does this literally for his damage, and he got health issues because of that. And continues to fight.
So recently, he was explaining to one boy ( who was sitting near me, so I listen whole conversation) for half of hour about those problems, how they teamed up against him, how he will have his revenge, he has people inside police as well, he will shot them etc etc... Old ego. Never mind, that boy listened him very carefully for almost half hour, and when old man finished, boy just told him ,,MAN, CALMED HEAD IS PRICELESS" basically that was one of best thing I ever heard. Everything summed up in one sentence. He told him that this all is worthless of his time and health. or that he is old for those craps, that small amount of money wont replace his lost nerves and headache..... or you can use it in to many sentences you wish. For half of hours of explaining, he used just one sentence which exchanges many other sentences. Which we can use in today world with our own problems. For some things its just worthless to waste your nerve cells. Simply, if you want problems, just go for it, if not, avoid problems whenever you can.
So, my daily wisdom ,,Calmed head is priceless"