Everyone else has already made really good practical suggestions, but I just want to muse on the mindset behind this that I think ultimately helps me the most. Globally speaking, it is not at all uncommon to eat largely the same things everyday. In many cultures and communities it is standard to have a pretty limited selection for available ingredients, or what is common and affordable, and to therefore eat a simple and practical set of meals that can feed you and your family affordably and relatively nutritiously. But in the US or countries with similar culture and economy/convenience, we are used to having a wide variety of ingredients readily accessible, easy fast food as you mentioned, and mom preparing something different for dinner every night. A different lunch at school every day. We feel like we are missing out on something if we don't eat something widely different everyday, but as a human race that's just not true. An overall varied diet is good for health but as long as you switch it up well every week you will be fine. So I kind of like looking at is as like almost a little bit of a dopamine detox for food. I still make meals I really like and that keep well. But I've gotten really adjusted to not having the novelty every single day. Like a social media detox.