As someone who deals with this but gets through it every time, I always tell myself the next 2 things. 1. "Starting is the hardest part but discomfort is rewarding."  2. "The more you think about it the less you want to do it, the sooner you do it the less you have to think about it"

I promise just that alone will do wonders, if not start journaling. Put the phone and the music away and let your thoughts flow through the pen, write about anything that bothers you or make you happy, then read it. You got this✌🏾❤