It is nice to read that you are having moments of joy and feeling like your old self! As we heal those moments grow and grow.
The d process will be very difficult with such an unreasonable person. It will be a slog but being free of his heaviness will continue to be such a relief.
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