In contrast when I lived in the Netherlands I found it VERY easy to be healthy. Life is organized around biking there: it is safe, easy and convenient to do. I probably biked around 1 hour every day, just from doing errands, meeting friends, going to university etc.
If I wanted to grab some food, there was usually a lot more healthy options available. E.g. even in tiny stores in the Netherlands they have great vegetarian options.
A lot of this is not stuff as an individual you can decide on. It depends on zoning laws, building of bike lanes and a multitude of policies and traditions you cannon easily change without collective action.