As I get older, I find that having better quality of fewer foods works best for me. Kind of like many of us are ditching synthetic clothes for cottons and wool, which are expensive but better for our health. I have 2 poly tunnels plus a young orchard and a few outdoor planters which, in combination grow an amazing amount of food while I'm at my job, but only from May to September, so I have now started to 'eat seasonally' again. We can and freeze and dehydrate a lot. I've been a "prepper" since I worked/lived thru the Loma Prieta quake in 1989.
I've swapped out crap "food" for healthier options. I'm not into sweets, but give me chips! So I joined "Thrive Market", an online shop and we now eat healthier versions of chips, crackers, even organic wine when it is available. I stopped stocking up on stuff to make cookies and cakes, to my son's dismay, but he works in a bakery and snacks all day anyway. I am saving a lot of money with this change. They have crazy good sales at Thrive Market, as well, which is the only time I actually buy stuff.
I have been a member of Azure Standard for a few years now, and find that another addiction, cheese, is covered as well. The organic, raw cheese is all we eat now. We buy the 5 lb blocks every couple of months and shred most of it, enjoying it on all things requiring cheese. You won't believe how good raw organic cheese is.... I'm now a cheese snob. I freeze about half of each block of cheese, using it up just in time for the next order.
I bought a sourdough starter from Azure as well, and make bread and crackers when I can, but our grocery store now sells "Naked" brand breads and buns so that is my go-to. Very clean bread, and all we eat besides sour dough.
I do not drink 'city water' without running it through my Berkey filter. Yes, I am a water snob. I take it with me in canning jars or recycled wine bottles or stainless steel bottles. I drink a lot of water. I also have some "LMNT" electrolyte packets in my bag to add to water when I get overheated or feel dehydrated. I usually add something like a sprig of rosemary or mint or something when I refill after lunch, for a change and medicinal benefit. Easy adds are a newer habit for me.
I cannot start a day without coffee, thus I purchase shade grown organic coffee- pricey but amazingly easier on my 62 yo stomach. I used to just add honey or stevia but found that Albertsons grocery (Safeway companies) sells organic "sweet cream" and vanilla creamer, so instead of making that ourselves, we simplified and buy those when available. I need convenience items sometimes.
As far as dietary changes go, I am landlocked in Northcentral Wyoming but I am a seafood addict. I joined "Wild Alaskan Company" for scheduled fish deliveries which has worked out well for me. My son will live with me til the end, as he is special needs and does not drive or thrive on his own, so what would have lasted two months now does not. Luckily he loves all food so we grow our veggies and eat salmon or cod at least twice each week. We found that our air frier is the all time greatest, fastest, cheapest thing to use for cooking all meat, so we treat it like the asset that it is. A little olive oil is all it takes, no greasy ick, and it does not heat up the house. We just ordered a case of salmon from Azure to compare. Same price for twice volume.
We use fancy olive oil and organic butter and only our own or organic seasonings and herbs. I learned to do that from a 105 year old engineer that I sat with at a conference once. He carried a stick of butter and a container of Redmonds real salt in his pants pocket, plus he grazed all day on peanut M&Ms that he kept in his shirt pocket.
Basically, I hunt for elk and deer every few years, buy local grass-fed beef annually, I get cases of chicken from the Hutterites nearby, I purchase a hog or lamb from the 4H kids each year - so local and not feed-lot stressed meat, and get the fish from Alaska. I grow about 90% of my veggies and fruit, put up a lot of it for winter, and add turmeric and Redmonds to everything I eat. I also use collagen powder for arthritis, make a million tinctures or buy the ones I cannot make from Nicole Apelian or the Homegrown Herbalist, (mostly the mushroom ones) and never ever ever go to doctors or dentists. I have found that simplifying the menu with better quality works great for us. Simple spice changes on the same old food creates a whole new meal, so no need to dine out or travel anymore. Sorry so long. Live long and prosper!!