Of all the things that are, some are good, others bad, and yet others indifferent. The good are virtues and all that share in them; the bad are the vices and all that indulge them; the indifferent lie in between virtue and vice and include wealth, health, life, death, pleasure and pain.

Epictetus, Discourses, 2.19.12b-13

How can I cultivate indifference to unimportant things?

I can cultivate indifference by training my mind through meditation, heart rate variability training and journaling.

By listening, while not engaging, with my thoughts and recognizing when they go offline, I will learn to not get overly excited, angry or upset.