A habit is only a habit when you can stop doing it without any effort.
Otherwise it is called an addiction.
I have a bad habit of taping my fingers or my toes. I can stop that though if I need to.
On the other hand, I have an addiction to chocolate. I have no idea what it would be like to quit and I don't want to find out either.
I have a funny habit of humming when I am eating something I like. And I never hear myself doing it, but others think it is funny and cute. They can always tell if I like something.
I have other bad habits of course, not going to list all of them

I likely have a few other habits neither good or bad. For instance when I get dressed, my clothes need to sit on me just so. I take longer to get dressed as a result. Not a problem unless I am in need of getting it done fast.
I eat my food one item at a time, usually veggies potato meat in that order. No real reason I can think of.
The thing with habits, is the longer you do them, the more likely you don't notice you do them any more without thinking about it.
I curse something horrible. But since I have grown more in step with my female side, I seem to have gotten to hate swearing more.
It took me about 20 years to purge myself of the neat freak in order to coexist better with my slob wife. I figued better to be less like my mom, in order to have less friction with my wife. But I have no problem making her remember, she is often the reason the place looks untidy.