I felt this way after leaving an absurdly toxic place[0]. Anything felt more productive. Even lifting weight felt like a torrent of meaning. But I'm not sure this freedom lasts on your own. It seems reactionary after being pressured into something that hurt you. After 1 month where I did 3h of sport daily and read books, my motivation crashed. Be prepared in case that happens. Find people with better view on life, better sense of workplace sanity. This (IMO) is better long term. Unless you manage to monetize your standalone problem solving skills (freelancing might be a good option for you too).

Take care.

[0] I had a string of bad luck regarding jobs, and I hated the whole work concept, but I got lucky and found a new place which is peaceful and interesting enough. Maybe you can find something like that.