I mean, I'm more a fan of simply catching myself in the act and telling myself to stop. That's how I've always tackled bad habits, I've done it in the past with a few OCD ticks, I've just been extremely lazy with nailbiting because it's such a common thing. But avoiding 'therapy' as it were (unless you count what I prefer doing as some form of therapy, idk) has nothing to do with masculinity... it's just a me thing, a personality thing. I'm stubborn and want to do it my way... some form of therapy might be faster, easier, more efficient, but it's not a rational thing, I'd just rather do it my way.
Dentist is stupid cheap with dental insurance