So the short version of my story:
My mom passed about 7 years ago and about 3 years later my father, after not dating or having any relationship (that we know of), announces he is dating the pastor of our church. We knew her many years ago and she had recently come back to our city (I have no issues with her). Exactly 1 week later he announces they are engaged, and will be married 2 months later. I was devestated as I was already dealing with other issues. In the months and years that followed my life drastically changed (pretty much went to sh**) and much of that had to do with my father's decision to get married. I know it doesn't seem like it but that really is the short version. Anyway, I have a lot of anger over how he handled the whole thing and still haven't really gotten over it. I have no delusions that my dad is married, I know what happened and I know I cannot change it, but my T says I need to radically accept this. She says I don't need to change the fact that I'm angry or say I'm okay with it, but I need to stop suffering.
I have no idea what she means by this and furthermore how to do it. Has anyone heard of radical acceptance? What is it to you? Any advice on how to achieve this in my situation? Any suggestions are appreciated.