Observe the World
Peace of mind can be achieved by only observing the world and what is going on around you. By observing, nothing is taken personally because no occurrence is directed at you - all it is, is an occurrence. It is out of your control.
By observing it and just watching what happens without taking it personally, you can then decide how to react to it.
By doing this, no one can ever bring you down, control you, make you angry or sad, or make you feel anything you don’t want to feel.
By observing the world, you see that almost nothing is in your control, and you accept everything that happens. You no longer try to fight it. The only thing you do is decide what action you want to take or what you want to say.
This way, you never fear anything or anyone. You take whatever comes and you don’t resist anything.