It sounds like anhedonia to me. I ran into a similar problem. As far as I can tell, it was mostly due to burnout. I worked too much and never really took a v

It sounds like anhedonia to me. I ran into a similar problem. As far as I can tell, it was mostly due to burnout. I worked too much and never really took a vacation -- other than visiting family twice a year for roughly a week per: some people might find that relaxing but I honestly find it somewhat stressful. Pretty much the only thing that got me moving again was a short-term leave from my job : my boss was very understanding. I did a short stint WWOOFing. I think the combination of physical work, a job that ended at a set time in the day, and a near-complete technology disconnect are what worked for me. During my day-to-day (both as an engineer and trying a startup), I always had something on my mind, even when I wasn't technically "on-the-clock". I don't think that can go on forever without exacting a significant toll on the psyche.