6. War is coming. I can't emphasize this enough: WAR is coming. One can say it's already here. I mean that seriously.
The age of abundance and relative peace is over. With the breakdown of supply chain and the fight for scarce resources, men will go back to having to fight for everything again. War will be part of life, either big war or small local conflicts. Worst case, crazy crime.
It means: learn to defend yourself. Every skill related to warfare will become very valuable and a safe bet.
If you're young, you'll eventually be drafted or you'll have to face raiders and local warlords during your lifetime.
I'm too old for the draft but I've been focusing on electronics, drones, intelligence, warfare equipment maintenance and communication. I already work heavily in supply chain so it's a great skill set to complement with, coordinating decentralized operations in the future if necessary.
Figure out what you're good at. I recommend medicine, gunsmith, chemistry and survival.