Maintaining a state of humility

Sometimes I get down to thinking I know everything,

If you're a fan of astrology, I have my mercury in leo, and my sun conjunct mercury, so I lean towards a prideful mind, which does bother me to some extent.

Anyway, I was simply curious to know what do you do on a day to day basis to maintain a state of humility, or to remind yourself that you're imperfect, and solely trying to grow?

Thanks