I show up on time, leave on time, and pay each week in cash. I have no serious mental issues. I don't stalk them or care to know about their personal lives.
I cannot see how I would be difficult.
The first one has called me challenging because I "fight the process" (and of course she refused to explain what the process was supposed to be) and the second has said I am a delight.
I consider the difference to be them - not me.