I'm trying to come up with more of a schedule as it will help me plan. Coming up with what to make is always the hardest part. With an entire universe of food, how do I decide when I'm shopping on Sunday what I want to cook for the next 4-5 days? So I'm implementing Pasta Mondays, Taco Tuesdays, and Pizza Wednesdays, and then leftover Thursdays. Then I only have to sort out three days, at least one of which is usually also leftovers and one of which is usually a rice bowl of some kind.
Repeating the same meals doesn't work for us as we get bored and end up ordering in instead of cooking what Id planned, but this gives a guideline and still leave plenty of room for different flavors. Last pizza night was buffalo chicken (cream cheese, cooked chicken, buffalo sauce, red onions, blue cheese, and mozzarella) so it didn't really taste like pizza. Tonight's tacos will be ground beaf with bulgogi sauce, shredded carrots, and quick-pickled cucumber, so again, not really "taco" flavors, but the guideline helps me narrow things down and have a direction. Rice bowls can be asian or mexican or even middle eastern.
Perhaps other folks here will weigh in, but my process is something like this:
Look at grocery store sales, look at my list, decide where I'm going.
Look through the fridge/freezer to see if anything needs using up.
Start writing a menu, based on what's on sale this week. Solicit suggestions from the family. Get few useful suggestions from the family (sigh). If I can't come up with more ideas, start flipping through my recipe book. (I'm not actually a boomer, but I do have printed out versions of recipes I like). Start flipping through the "fast vegetarian" cookbook I like, if necessary. If I'm going to be sitting on the sidelines of a soccer game, take the list with me.
Once I have a menu, I'm in good shape to write a complete list, that includes every single thing we need for dinners, in combination with the list on the fridge (of stuff that people have noted we need to replenish), and some standard stuff for breakfasts and lunches. This way I don't get partway through making something only to find out that I forgot to purchase, say, cilantro.
I'm not very tolerant of repeats, even if it's something I like. I also tend to substantially change the menus between seasons, largely for variety -- but also because large pots of warm beans are less appealing in the summer then room-temperature main-dish salads, for instance.
So: tonight, in honor of the forecasted thunderstorms (which haven't really materialized) we're having the smitten kitchen lentil, sausage, and chard soup, probably with toast.
Tomorrow, I'm going to look at that cauliflower in the fridge and start writing the menu for the next week or two. (It's going to include cauliflower and black bean tacos, most likely.)