I took Spanish in high school and I didn't do too well in it. My Spanish teacher told me not to go on with Spanish anymore so I was discouraged a little bit.
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.