What's a photography "rule" you completely ignore now?

Obviously, rules are made to be broken.

Photography is an art and art has no absolutes.

So what are some common photography "rules" that you ignore?

For me, sticking to low iso.

I feel like it's a sweaty rule that sometimes interferes with a shot rather than help it. I'd rather have a serviceable, grainy capture of a great moment than missing the shot cause "oh no, iso was 1000!! That's a grainy mess!! That's a bad photo!!".

Also, rule of thirds, fuck that I can go artistic without the grid too.

What's yours?