I am "old school", brought up to old standards:
A man doesn't leave the house without his pocket knife, any more than he would without his pants.
Be respectful to old folks and females, and help them if they need help, without expectations of more than a "Thank You.", even if you don't know them. Also, a lady don't open a door or light her cigarette. A man should open the door for her, and hold the flame.
Salute the Flag*, Thank those in the military for their service, be respectful to police and firemen.
Don't lie, Don't trust politicians (Easy way to tell if a politician (and these days a news anchor) is lying: Their lips move.)
Do your assigned task without complaint.
Do the job right the first time.
There's no such thing as a "free lunch" or "free ride" (Tho I never charged a gal who I gave a ride home when I was in Highschool. I had to go past their place on my way home anyway, and I enjoyed their company and conversation. No. I never got a kiss or hug.)
Use common sense. Think for yourself; don't follow blindly. Etcetera.
*I was raised and in school when reciting The Pledge of Allegiance, and a short non-denominational prayer was the start of every school day.