I think it's easiest to teach by example. My dad didn't tell us to work hard we just saw how hard he worked. I know I have shortcomings - like a short fuse - but I've learned you can't come home from a long day of work and snap at the kids.
Projecting a persuasive image of a desirable and practical future is extremely important to high morale to dynamism to consensus and in general to help the wheels of society turn smoothly.
