I think you are being too hard on yourself. As an overachiever in my work who often gives more than 100%, I understand wanting to kill it all of the time and not be complacent. My guess is that your complacent level is still higher than most. It is impossible to constantly give 120% even when things are normal, so give yourself a break. It sounds like you were really using work as an escape after BD, so you are probably just a little burnt out from extra work and stress from your sitch. You will get back there.
Me: 42 H: 40 M: 12 H moved out - 8/2015 I filed - 8/2015