Yeah, I get that wince at the till feeling far too well. For me the biggest difference came when I started being a bit more deliberate without overcomplicating everything. Things like scribbling a rough meal outline for the week and sticking mostly to that list have helped loads, plus grabbing staples in bigger packs when the unit price makes sense. I've also got into checking what's actually cheaper per portion rather than just chasing yellow stickers. Someone shared this decent roundup ages back that lines up with what I've found useful in real life about and thus those advices feels fresh and decent for me, cause you know in our everyday life buying food with discount is kinda useful. Nothing earth-shattering, just practical stuff I've tested myself over the last few months. It's kept our bill noticeably lower without us missing out on decent dinners, which is the main win for me.