I like it mixed, periods of high stress, challenging work, followed by periods of mellow coasting doing simple jobs (even repetitive jobs). If I stay too long

I like it mixed, periods of high stress, challenging work, followed by periods of mellow coasting doing simple jobs (even repetitive jobs). If I stay too long on the high stress, I burn out and tend to snap at coworkers (it brings out my aggression), if I stay too long on the coasting phase, I get bored and get an urge to do something else (I miss the highs of the high stress situation). As I advanced in my career I get a bit more control on what I do, so I get to pick most of my battles. In any case, as I got more experience, situations that used to be stressful no longer feel that way to me, so the next challenge needs to push me further from my comfort zone.