I’ve had high-function anxiety and depression for as long as I remember (most of the time untreated due to high costs of doctor visits and meds), so besides studying I just lied in bed and watch tv or scroll through social media, not having energy to do anything else. 
But now I’m on antidepressants and I started my first job out of college, which I really like even though it requires long hours (typically 9-7:30), and for the first time in forever I have energy but I don’t know what to do with it so I end up doing nothing with my free time, and I don’t even feel rested afterwards... I just feel numb.
I don’t know who I am when I’m not doing something “productive” (studying/working), and I think I need hobbies but I don’t know how to figure out which hobbies I like and there’s not much options due to covid restrictions (9pm curfew and weekend lockdowns). 
How can I know what to do with my free time to stop feeling like this?