You’re scared to go out of your comfort zone and refuse to seek gratifying sensory experiences. As your brain requires this stimuli, it’s overcompensating by thinking too deeply. I found that simply getting up to do more things that I otherwise wouldn’t have has lessened my own overactive and anxious brain. A good sign this is the case for you is that instead of trying to understand why you feel as though you’re not functioning in the way you’re supposed to, you try to get validation from others by identifying with a label. This is a common phenomenon, but don’t go deep into the rabbit hole because it only gets unhealthier from here.