Dear Jamie -
I concur with Standfast that the Freedom From Judgement book will help you in this instance.
Some things we have done/choices we have made have the potential for us to feel regret...I know in my experience there have been several...but then I wouldn't be ME NOW.
The experiences (regrets) that lead us to new awareness territories "serve" us in our seeking the realization of our wholeness and perfection as we are...to love ourselves (and others since we are all one) no matter what the package looks like, etc.
I know I've gotten much more accepting about things I used to regret, or wish I did different, but now realize all is well anyway. Even having made those choices, I am here now, and happier than ever, healthier than ever (except for when I first arrived in this lifetime ;-D
With blessings,
Deborah