Oh I know. I've tried everything, hot sauce, pepper, that bitter shit, I even let my ex put clear nail polish on my nails one time. Didn't matter, I just chewed through everything.
Some more habits of mine:
When getting dressed, I have to put on everything starting with my left side, pants, shirt, socks, boxers, doesn't matter.
If I'm going down stairs, my first step has to be with my left foot. Same if I'm going up stairs.
If I'm using a clicky pen, I'll always click it 3 times before writing, and then 3 times after I'm done.
Man I'm fucking weird.