I think some of the biggest changes in depression were:

1) Improved diet and nutrition through bringing home less junk and pop-it-in-the-oven foods

2) More time up and away from the computer/bed due to increased need to cook and not let food spoil

3) Less time in toxic environments due to both leaving a retail environment where disabled customers were passed around until they landed with someone with low enough social standing to not be able to refuse them, and finally getting sick of the ridiculousness of needing to be fake nice and touchy-feely all the time to "win" friends

4) Increased social support from people I actually like through kicking the last habit