Letting go of regrets is hard. Really hard. I struggle with letting go of regrets myself. Honestly, it requires some hard work, but the benefit is life shifting!
A couple of reasons why we sometimes can’t let go of what could have been or wish had been. First, those thoughts are familiar, and we are comfortable with whatever is familiar even if it is super disempowering.
And second, and much more important is that if a regret just keeps on coming up, there is usually some sort of deeper, unresolved issue that’s causing you to not be able to let go of it.