There is a difference between happiness and wisdom: he that thinks himself the happiest man is really so but he that thinks himself the wisest is generally the greatest fool.
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.
