This weekend another student in a class I was taking was really distracting. As I tried to focus, I remembered some lessons from the stoics.
The more I thought about my reaction in the moment, the more I knew it called for some deeper understanding and more learning.
Digging back in to Meditations and Epictitus, this lesson appears again and again. You are not in control of everything. What you can control is your reaction, and how much energy you give the things that bother you the most.
It takes Practice - just like anything else.