Great suggestions by djt.

I found myself in a similar space a few years back and these are the three things that brought me out of my rut:

1-I joined a martial arts club. The Aikido community is generally a welcoming group and most dojos have classes 5 - 7 days a week. 2-Wrote brief entries in a journal. 3-Sought out cultural experiences/events that I wouldn't normally attend. Oh and 4-, actually, outside time. Even in the winter. Even a 15 minute walk. The ol' gray matter really likes to hit the trails, or even the pavement.

Just make one change to your routine today and that sense of your own agency can build momentum.