I've never thought, "I'm going on a diet." I grew up with the notion that diet was your eating habits, so to me, the thought has always been, "I'm cleaning up my diet." And I have!
I've been off of sodas and sugary things for so long that I had a lick of cake batter yesterday and it tasted like dirt, it was so sweet. I do occasionally have a tiny bit of sugar in something like tea, but it's always either a very little bit, or Truvia or Splenda, whichever happens to be in the house at the moment.
I've started making my own foods as well, which helps, mind-set wise, for me to care a bit more what's in it and I do not eat boxed meals anymore like Hamburger Helper. The only things I eat that come from cans either are vegetables, fruit, and tomato soup cause that stuff is freaking delicious (although I do want to find a recipe to make my own).
So, yeah, no fads, just a much healthier diet than what I previously ate.