Is it normal to not feel emotions for long

I read something recently that I wish I could remember. It was fitting. It basically said that emotions make us human. That experiencing them is a good thing. By trying to mask them, mute them, ignore them, drown them, drug them, hide them, etc. It really only hurts you. Having feelings teaches you to adapt. And that is one thing that makes you strong, and keeps you strong, that ability to adapt.

So it's normal to feel like a robot. We get desensitized. But don't forget to be human.

My brother is like you and I'm the opposite. For example, whenever we'd get into a fight, as soon as the fight was over, he'd have forgotten why he was upset and completely forgiven me. He never stayed mad or upset, whereas I'd go to bed miserable and wake up annoyed, and I wouldn't feel better until we'd actually apologized to each other, because I HATE fighting, especially with someone I care about.

It sounds like you're just not a "dweller". You don't seem to ruminate at all, and that's healthy. I have a lot of anxiety due to my constant worrying and rumination. The only downside, as you said, is you also don't feel positive emotions for long periods either. On the rare times I catch an emotional high, it can last quite a few hours.

Being less emotional and less sensitive is completely normal. The problem here is that you feel like an empty shell. That sounds like some kind of depression to me, but instead of being sad, you're just emotionally shut down.

I have been in a similar situation best advice that was given to me "go see a therapist." and if you are a minor and still in high school you can go see a free therapist. You can see your school counselor or psychologist, and in extreme cases a therapist provided by the school district.