I've done both repetitive boring jobs and mentally taxing jobs. Repetitive boring jobs were not psychologically exhausting for me, at least the ones I did (I w

I've done both repetitive boring jobs and mentally taxing jobs. Repetitive boring jobs were not psychologically exhausting for me, at least the ones I did (I worked a couple of warehouse jobs one sorting and inspecting parts before they were sent to an assembly line, and another sorting merchandise coming off a truck, stuffing envelopes/shrinkwrapping for shipping and receiving, data entry, etc). They can be physically exhausting, especially if you work long hours, but not psychologically. Since my brain didn't need to be taxed I got to let my mind wander and think about things for 8+ hours a day, or have audiobooks play, or whatever, and I still had mental energy afterwards to work on personal projects. Mentally taxing jobs steal that energy away from you. They tend to pay more, but they take your creative and mental energy away in exchange. And my mental and creative energy is more valuable to me. At least with the more physical jobs I was able to stay in shape a lot more easily.