Did you ever get your vision assessed by a neuro opthamologist? If your eyes don't work together (a common event after brain injury), no amount of anything else will make you feel better. The brain's biggest job is dealing with vision, so if that is messed up, so are you (we) !

Maybe your phone is too small to focus on. Tablet or a computer? May be more relaxing and less demanding.

I listened to Glen Gould play Bach and felt lifted out of brain injury for a moment. Highly recommended!
Hang in there.