For me having a pet really help me out when I was really going through it. I went on a lot of solo hikes with him and he brought me out of my funk.
When he passed, I kept the tradition of my morning walks (increased the mileage/pace) and listen to podcasts. Exercising in the evenings after work (crossfit/cycling) helps get the juices flowing for me.
Lately Cycling has really helped out, especially when I'm feeling sad after I put in some miles and some self-reflection I usually feel a lot better. But with this time change I'm really gonna miss not being able to cycle after work, I'll be zwifting but it's not the same.