Got rid of multiple addictions (internet, porn, sugar) in about 1 year and also lost all of the extra weight I had gained. This was, of course, such a big change that it led to depression. But it's getting better day by day, and I should be proud of the accomplishments I've done this far and not be too harsh on myself.
I have to say it was shedding the religious dogma I was raised to believe, and believed, and becoming an independent thinker. Those who were never believers cannot understand the struggle that entails, nor the immense feeling of liberation that occurs as a result of tossing away all that baggage. To look at everything through a fresh, open, mind was, and still is, a wonderful feeling as I no longer feel that so much of the world is closed off and forbidden (especially when it comes to science, which I can now love rather than ignore and fear). I can now learn about any damned thing I want without fear of upsetting some deity who wants to keep me ignorant and submissive.
Breaking the toxic chain of abuse and alcoholism that has plagued my family tree for a very long time.
Sober, happy, married 19 years.
Being self employed for most of my life and having been able to retire to keep doing what I love doing.
Learning how to wipe, I guess.
And an extensive collection of writing in journals and poems and stories.
Surviving this long and having done just about every damned thing I've ever wanted to do. A few things on my bucket list will probably not be accomplished before I kick, but I have few complaints.