Exacting Apparently is Bad

I was talking to one of my subcontractors about something being inaccurate.  We know each other quite well, and he made a remark that being exact, having high expectation is root of disappointment, and Rob nodded.

Then I said if you weren't exact, I would change you as a subcontractor.  I wasn't really joking either.

I haven't grown out of my high expectation, but I have learnt to cope with disappointment.