In the XKCD life scorecard the number of times I should have stayed is 2 times, which depended on how happy i was with the given situations.
Explanation:
The XKCD life scorecard is a chart in a comic made by Randall Munroe showing the outcomes when a person was in situations he didn't like. It counts 13 situations which he realizes he shouldn't have stayed in and only 2 situations where he realizes he should have stayed.
He is implying that it's better to leave a situation you're not happy with, rather than stay hoping that it will improve.