Never say "never"...you'll eat your words.
The best advice I ever received: "Hey, there's this guy you really should meet. You and he would be great together." I followed the advice.....we had 37 years of being great together.
Save a little money; it may be your only friend when you're all down and out.
Don't tug on Superman's cape, don't spit into the wind, don't pull the mask off the Lone Ranger and don't mess around with Jim.