You catch more flies with honey than vinegar. It works with people too, but that much honey can get expensive so I choose to ignore them instead. What would I want with a crowd of people trapped in honey anyway? I have enough trouble with just one of them in a face to face conversation.
A bird in hand is worth two in the bush. Unless, of course, the bird in hand is dead: in which case your bird isn't worth squat and there are two perfectly good birds in a bush laughing at you.
What doesn’t kill you makes you stronger. Unless of course what didn’t kill you just succeeded in turning your bones to rubber, in which case what didn’t kill you made you into a Gummy Bear.
If you see a penny, pick it up and all the day you’ll have good luck. Not sure just how much luck a penny will get you nowadays. Pretty sure you probably spent it all just finding a dirty, discarded penny in the first place.