I don't like the label "illness". And I don't really like defining feelings between "good" and "bad". Sure being suicidal sobbing mess is not "good"... but sometimes it's about "I wanna kill part of myself I hate" and maybe good to explore.

I was born nerd. I was born weird. I read Hiroshima diaries at age of 11 and was obsessed about nukes since (maybe this played part in my decision what to study). I obsess, literally obsess about countries and talk to 'em. I obsess about death and mortality of me and others and that lead me to studying spirituality and various religions. I prefer fantasies to reality, I sometimes stray away from people...

Each of these and others I won't talk about right here... some would label 'em illness. Some would wanna rid of 'em. But who has the right to tell me what is right and what is wrong to feel? What if I can make the bad feelings just a part of my experience?

Maybe you cannot cherry pick feelings and thoughts. If you lessen the bad, you will lessen the good with them, maybe not to the same degree, but it happens.
It's up to you to chose if it's worth it, and for how long. Maybe sometimes we need calm space... but ya shouldn't lose yourself. That is a big no-no.