One thing I am trying is to manage when I eat carbs. I ride my bike 5 days a week and so before I go on a ride, it is good for me to have some good carbs. If I can keep to that for a whiile I'll see if it makes a difference. I want to be able to perform on my bike, and not bonk, so having some carbs before and during my rides will be helpful.
I think I need to increase the amount of protein I eat, but it needs to be non-fatty meat. I like ground turkey and chicken so I'm good eating those in the majority. But in order to get enough protein for what I've figured out for myself, I also have a protein shake after my rides (with some fruit and fat) to help with recovery.
For snacks I am trying to head for celery, carrots, broccoli and hummus or something similar - I get the crunch and salt that I used to give myself with potato chips, and it is healthier to have the veggies.
I've also figured out if I don't eat enough I'm not helping because then my metabolism slows down, which is not helpful, so 3 squares, and some snacking is what I'm moving forward with.
In addition I do a strength and balance workout 2 times a week. I'm going to start adding another day. Having more muscle, should help - both for increasing metabolism and for my longer term health.