Life Pro tips You Received?

[FrodoSwaggins]

What's a great life pro tip you received from someone who knew from experience?

I will start.

One time I worked with a guy who did food demos for middle school students. He told me, "When you cut off a divet, save that thing, they can stitch it back on!"

Great advice, when you cut off a hunk of your finger, don't throw it out. The people who sew these things back on have a ton of practice and teeny tiny needles and thread. 

How'd this guy learn? Didn't save the divet! Takes a lot longer to heal.