When my boys were young, I’d tell them, “I’m right 100% of the time, and that’s a conservative estimate.”
I was wrong. Nobody’s right 100% of the time.
Romans 12:3 (AMPC)
. . . I warn everyone among you not to estimate and think of himself more highly than he ought [not to have an exaggerated opinion of his own importance], but to rate his ability with sober judgment, each according to the degree of faith apportioned by God to him.