Yep, I don't like having a hard schedule and I get bored quickly so I don't tend to keep jobs much past 6 months. I don't get fired, I just get tired of the job and move on. A notable exception for me was delivery work, the late night hours and the sheer variety of the job kept me engaged enough to stay at it for about 5 years.
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“The totally convinced and the totally stupid have too much in common for the resemblance to be accidental.”
-- Robert Anton Wilson