Pearls of Wisdom

I'm looking for suggestions.
I would like to know what you have learned over the years as a nurse that they DID NOT teach you in nursing school that has helped you out at the bedside.
What tips & tricks have you learned by accident, or have learned the 'hard-way' that has made your life easier when working at the bedside?

For instance, no one actually showed me, but I learned through my own difficulties that administering ProSource through and NG/OG or Duotube flushes MUCH easier when mixed with H2O prior to flushing it through the tube. Otherwise it will take you forever and a day to flush.

Any and all suggestion would greatly be appreciated.

Thanks.