all it takes is a "crisis":1. Make sure your health and physical fitness is the best it can be.
2. Learn how to be self-sufficient. Practice the necessary skills as much as possible. Go for a weeklong trip to wilderness just with a backpack. It's fun.
3. Hoard things you absolutely need but might not be able to obtain when the society collapses (no, you don't absolutely need toliet paper)
4. Buy a gun. Hoard ammo. Practice shooting as much as possible.
5. Make sure you enjoy every moment you are alive
These are some of the best investments you can make. You should be doing these things even at peace, but now they are 10 times more important.
Regarding the relocation, you will have hard time as a stranger in strange country when SHFT. Brian is spot on.
Moving from America would be a wise thing to do, but you want to move to place that will be largely unaffected by the collapse. And place where people are peaceful. Or non-violent. That's definitely not Mexico.
View: https://www.youtube.com/watch?v=kf8trl69kzo