Happened to me for few months due to attrition in my team and lack of new management's no experience in how to use DevOps. Got so burned out that I stopped taking things seriously. On few occasions I tried to get things done in a way which took least number of CPU cycles of my mind, knowing it was not the best solution, but just wanted to get it done and get over with it. Worst part was not able to take leaves since feared a huge backlog of fresh shit once I returned. Affected health, sleep and family life. Still recovering from the burnout.