I tend to agree with@iserbrown about letting things go a bit as it really doesn’t help.Yes I too have had my disappointments and surprises with people - I have tended to let some friendships drift but I don’t want to waste my time being consumed with anger / resentment as I’d rather focus on things/ people that make me feel good.I think a new balance settles in with others after a cancer diagnosis and my advice is try to not waste time and energy but go with the flow.I find my daily walks listening to my favourite music helps me move through annoyances constructively so I come home less churned up by things and people that don’t really matter.