You've already been given some great ideas. One of the things that carried me through those early days is that I created music playlists and I danced A LOT at home. It is really hard to be down if you are dancing!
I also created stations on Pandora and danced to those too. Lol!
I pulled from music before H - music that reminded me of carefree days! Obviously I would steer clear of music that reminds you of times w/H! Pick songs from happy, youthful days.
Personally, I definitely tried to fatigue my body so my mind could rest more. I hiked to music, took up rollerblading and played tennis (which is super social!)
Me 41, H 47, M 15 yrs, S11, S13 BD 1: 11/4/14 we work on it; really I pretzel myself BD 2: 3/31/15 H goes down to "dorm room" 8/15: H back to MBR 10/15: H back in dorm room 1/18: H files, now divorced