>Have a week where everything I do is fun, I'm constantly motivated to do things and I enjoy all of it.
>After, have a week where absolutely nothing is exciting and I hate everything I try, or am otherwise completely stoic and cannot bring myself to care about anything. The most I feel is mild engagement.
What do I search up if I want to learn how my brain works? I just want to read some things to understand what's causing this, and maybe find a fix. Is there some cheat which will make everything enjoyable?