I don't know from where to start because sitting down facing my laptop and supposably be writing how could i encourage my own people to live healthier life is not easy, anyone would think "oh really, i think it's so easy", i want to tell him no you are wrong, yeah its easy to give model answer as do awareness campaigns and these thing. but lets take a deep breathe and think about it, many people tried to do awareness campaigns and these things, however did actually work, not that much. 

In my humble opinion, i think indirectly forcing them will be better than encourage them in the short term. like for an example, the government should put more taxes on cigarettes that could lead to many people quiting cigarettes or fund social groups that are against fast food for example that will make fast food restaurants lower the portion or use less fats or give  salads with the order.

on the other hand, in the long term if my people had better education that will automatically make them wanna lives the healthier life because they knows the consequences, and before the consequences they will know the causes.