“the squeaky wheel gets the grease” the idea that the most noticeable (or loudest) problems are the ones most likely to get attention --wikipedia
"fool me once, shame on you; fool me twice, shame on me" Fake "wisdom." Self-shaming isn't productive.
"you get what you pay for" "used to say that a thing that can be bought for a very low price probably isn't very good" -- merriam-webster.com
"time heals all wounds" "used to say that feelings of sadness, disappointment, etc., gradually go away as time passes." -- merriam-webster.com
"nice guys finish last" Actually, "kind, emotionally sensitive, and caring about others—holds great appeal" --from linked article
"So live your life that the fear of death can never enter your heart" Attributed to Tecumesh, Native American Shawnee leader (1768-1813)
"good things come in threes" if a fortunate event has already occurred twice, a third fortunate event is likely to occur --request
"damned if you do, damned if you don't" Level the statement is subjectively true and experiential. Happens to be the level of politicians.