If you don't have a graduate school playlist that you update periodically, I strongly recommend you develop one. Suggestions:
* Soundtracks from movies about (allegedly) brilliant people.
* Soundtracks from movies about strong people.
* Motivational songs.
* Songs that help you relax and focus.
* Even songs about writing! - https://www.writersdigest.com/editor-blogs/there-are-no-rules/20-best-songs-writers-writing-ultimate-writing-mixtape
And if you don't like music, I don't know what to tell you.
Well, maybe I would tell you not to play music while you write and to disregard this post.