When I'm overseeing contractors, I am generally easygoing. I don't get worked up if the geology doesn't cooperate, or if a contractor's piece of equipment malfunctions and needs some sort of fix. Stuff happens. Drillers who I've worked with on long projects and/or projects that have been prone to various technical obstacles know that I'm basically relaxed about these sorts of budget/schedule busters.
That doesn't mean I'm easygoing with my equipment or what I need to do. My coworkers know when I'm having technical difficulties, because a constant stream of muttering/mild curses comes from my office/around the corner of a recalcitrant piece of equipment.
I recently was doing some sampling while I had contractors doing prep work that didn't require any oversight on my part. Specfically, I was using a bailer to collect water samples from an extremely deep well with a water level greater than 200 feet below grade (don't ask). And every time I pulled up the bailer, no matter how careful I was, I inevitably tangled the string into a massive Gordian knot that I could either pick apart or cut and knot back together. I had no idea about this, but apparently the acoustics of the place were such that the contractors could hear every choice word. According to the crew, the contrast between easygoing overseer and cranky worker was so funny, they hung out for a while just to appreciate how much fun I was not having.
Oh well, some days I'm the only entertainment we get.