Man, I've been trying to let go of some things for years and it wasn't until I was in the position I'm in now that I have sluffed off a few things. One thing that I had held onto went all the way back to when I was just out of high school. That fell off in January after a friend helped me work through the mental hurdles that I had put in place. The past few weeks I've been getting rid of old paperwork and cleaning out the different spots in the house and when you can toss 4 boxes of crap out of your life it's easier to stand a little taller.
Letting go is physical and mental, I've got another book to read and have read other books in the past about cleansing, organizing and decluttering your life and I know that I mentally feel better when I physically get things out of a pile and either organized or gone. Our brains need the same exercise as well and it's been a difficult process for me to figure out what I need to do to mentally let some things go from my past so I can be a better me and stand a little taller. The harder part with the brain though is you are unable to drop your memories or fuck-ups at Goodwill or in the dumpster. You'll still remember and or know where that body is buried with the trick being to let go of the hold it has on you. Sure, if it's something you need to "apologize" for or say "thank you" then do that, part of letting go is saying or writing something down to get it out of your head.
Part of me letting go mentally is dropping a blog post about something I've had in my head for awhile so if you are reading this, thank you and I appreciate the free session.