Yes, I'd think it would be difficult to go back, to admit your wrongdoings, to humble yourself to those who have been hurt by your actions.
More important though, is that by going back, you are returning to Jehovah. It's first about strengthening your relationship with Jehovah through His Organization, and then about the individuals within it whom you love and miss.
Have you prayed on this matter Shawn, asked Jehovah for the forgiveness and guidance you're seeking? Jehovah and Jesus can lead you back to the path on which you find purpose and meaning, back to the ones who bring true happiness to your life -- and away from the guilt and anger you feel toward individual humans.
Re-read your initial post carefully. I believe you have answered your own questions and will find your solutions in your own words.
I know this is not the advice many here expect, but here it is anyway: Go back to the meetings, put the anger out (it is a very destructive emotion), go with an open heart and mind for the ones who truly love you.
I need that happiness back. I am not finding it all alone by myself.
I think you do know who can help you get that happiness back. Remember Shawn, you are never alone ...
best to you,
willow