1) Always be nice to everyone. Especially the people who seem to need it the most. You never know what someone else is going through.
2) Always convert to pdf, unless you are making a conscientious decision not to. It just makes life easier on everybody.
3) If you have to qualify your statement(e.g. not to be rude, but...) you probably need to rethink whether that statement really needs to be made.
4) Never let a man hit you. The first time should be the last time.
5) Never depend on a man to take care of you. Be able to take care of yourself. (This one came from my 80 year old great-grandmother when I was in high school.)