Unable to change

I go to the gym 5x a week for 6 months, and as soon as results start to show, I stop going. I start praying regularly and as soon as I start to feel closer to God, I stop. I have applied and been accepted to a masters program, but every semester I stop short of actually enrolling. I’m not ungrateful for what I have already, overall I’m in a pretty good spot, but what is wrong with me?

For the past 3 years or so I’ve found myself unable to make positive and permanent changes that aren’t related to my career. I’ve even had severe writers block with music (I just write for fun but I used to churn songs out). Is this it for me? Have I acquired all that I ever will? Has anyone here ever broken out of a funk like this?