There is a an unabashed realism to this sentiment and yet, I wouldn't advise living one's life this way.
I try not to burn bridges and rather hold relationships as carefully balanced with mutual respect.
Of course, that doesn't mean I haven't wished to burn a bridge or two.
At the dawn of a new year, it's a time to reflect on the past and move forward with the new.
May you each move ahead with bright ideas and the courage to act on your dreams and desires.
c.1300, from O.Fr. corage (12c., Mod.Fr. courage) "heart, innermost feelings; temper," from V.L. *coraticum (cf. It. coraggio, Sp. coraje), from L. cor "heart," which remains a common metaphor for inner strength. In M.E., used broadly for "what is in one's mind or thoughts," hence "bravery," but also "wrath, pride, confidence, lustiness," or any sort of inclination. Replaced O.E. ellen, which also meant "zeal, strength."