I did the 21 day meditation series online a couple of months ago with the theme “I want for you what you want for you”. This was for any kind of relationship, existing, or broken. I felt my resentment diminished significantly. I was feeling a lot better. It has to be done on a regular basis thought, or repeated often, because you do slide back to anger sometimes.
It helps me when I repeat this phrase.
M:50 H:52 S28 (my S from previous marriage) M:17 + 3 BD: 06/12 S: 06/12 - H works in another state