Letting go of unhealthy friendships

What would your advice be to someone who is struggling to cut off from people (be it friends, relatives, lovers) who are unhealthy for them?

Sometimes it's very easy to feel overwhelmed with guilt for letting go or cutting people out of our lives, even though we know it's for the best.

What would your advice be to someone struggling with this?

my dad struggles with this, he is always getting caught up in family arguments and going out of his way to help and please them and just ends up getting upset and hurt.

I too used to be this way but im a lot stronger now, I feel we all have a limit of how much stress our hearts an brains can cope with and so in the end I just had to cut ties with certain people.

I always tell my dad not to get involved or to not worry but he has a big heart and makes family a priority no matter what, which isn't a bad thing, I too hve a big heart but my motto is to only be there for people who are there for me back, family or not.

wont necessarily cut them off althogether but I wont be breaking my back to go out of my way to help or support them if they don't appreciate it or if its all one sided.