should i stand up to jerks who are treating me like crap for years?

Well depends on the severity of the bullying. If it can be handled nicely while standing up for yourself then by all means

As a wiseman once said,

[i]If you let yourself be everyone's punching bag, they'll only ever see you as a punching bag.[/i]

Elbow the Motherfuckers right in their jaws.. Works for me. 🤷‍♂️
Take no shit from no-one.

kick them right in the nuts.

small ball bat...