Encouraging healthy habits in others

I saw a great post on Fitsugar today about encouraging healthy habits in others. It's a topics that interests me because I'm always trying to inspire healthy living in my friends and family now that I know how great it feels to live healthfully. Jon might be a lost cause but I'm working on my friends

Here are some ways I (and you) can encourage healthy habits in friends:

• Instead of heading to a restaurant, where you'll be tempted to order something unhealthy, have a potluck at your house and make something healthy. But if you must go to a restaurant, make it a healthy one ... like a sushi place.
  

• I'm in a book club and when it's my turn to host, I try to make healthy-yet-tasty things that the other members may not have tried, like baked pita chips and tzatziki. I'm hoping that they'll like it enough to ask for the recipe so they can make it at home.
  
• I like to suggest other activities than sitting in a pub all afternoon, which is how my friends usually get together. Floating down the river, playing Frisbee in the park and taking a hike are all great ways to bond. And honestly, if my friends still insist on spending hours in the pub, I'll sometimes skip out because it's just not worth it to ruin my streak of healthy eating.
  
• I teach by example. If I order the salad instead of the fries, maybe they will too!

What not do when encouraging healthy habits in others? Nag them, preach at them or give them a dirty look while mumbling under your breath about how many grams of fat that thing they're about to eat must have. You may have their best interests in mind but they have to make up their own mind to be healthy.