Are there any lifestyle habits that help prevent hair loss?

Compared to before, I feel like I'm losing a lot of hair and my overall hair volume has definitely decreased.
I am thinking of starting to manage my hair loss in earnest from now on.

It isn't at a serious stage yet, so I think it would be premature to visit the hospital.
I want to change my basic lifestyle habits to help prevent hair loss.
Is there any lifestyle habit you would like to recommend?