Reck (one's) own rede verb phrase
To act on the advice offered to you by somebody
He should reck his own rede and have enough sleep to become healthier.
This proverb advise you already have your own valuable thing, so you don't need to take the risk of getting something better, which may cause you to lose everything.
To tell someone to leave or stay away from a dangerous situation or trouble
Advice that is good but unfeasible
no difference happens to me; whatever
Only foolish people learn from personal experience rather than learning from others' mistakes