How did meditation help you find peace and change your perspective on life, especially when you were at your breaking point?

How do you deal with a supervisor at work who constantly watches you and asks "why are you doing it like this? why are you doing it like that?", and have you tried to work away from them in an attempt to escape this relentless criticism?
What's a classic story from your life or someone you know where someone realized too late they messed with the wrong person? How did it unfold?