So I have been very mean to the people I work with now I am nice to them but they are not nice to me?

I know I have hurt them and I feel bad also it's probably to late to apologize but how do I communicate with them? cause I know whenever they talk to me they will have a verbal abuse towards me and how they will show me how much they hate me. I know I have been mean to them and I feel guilty for that but how long will these people hurt me now? cause I know what goes around comes around. these employess will torture me more then I torture them I just know cause I can see it and feel it and it's not fair cause then I end up punishing myself as much as I will be humilated by others.