Can frequent gum swelling also be due to lifestyle habits?

I tend to have specific parts of my gums swell frequently when I'm tired.

It got better after a few days, so I just thought it was a matter of my condition.

However, since the same spot kept swelling repeatedly, I wondered if it might be due to my brushing technique or my chewing habits.

I'm also wondering if mentioning these details to the dentist would help in finding the cause.

I keep putting it off because the pain isn't severe, but I'm thinking of getting it properly checked this time.