We like to think we already know everything we need to know. And we tend to seek out sources that confirm what we already believe. There are certain truths that we have difficulty accepting, because to acknowledge those truths would require us to face contradictions in ourselves.
Having strong feelings about something doesn’t make you right. A strong conviction has nothing to do with being right or wrong. Look for errors in your thinking, instead of assuming you’re right.
It’s better to underestimate yourself than to overestimate yourself. Overestimating yourself has a higher probability of getting you into trouble—you’ll take more risk than you should.