I have problems trusting people. Specifically trusting them to do something, do it well, and do it on time. Delegation = trouble. Always.
I've worked on it—I know I can't do or control everything (except, of course, in my marvelous fictional universe ... ). But it does seem like every time I go out of my comfort zone and entrust someone with something and then take a deep breath and go on with my life, it tends to erupt, sending tiny flaming particles of renewed mistrust back into my now-already-roiling-with-needing-to-clean-up-an-unexpected-mess gut.