You're not going to suddenly build a logistics system for dairy farmers, because you're not a dairy farmer and you don't know what kind of problems they have. But look at your own daily life. Your kids school might have some problems you could fix? Your daily shopping might have some annoyances you could invent a solution for? Look at your own life and stop ignoring the boring problems, while looking for the glamorous opportunities. Maybe keeping a pet has some annoying obligations that could be easier?

Talk to people in your everyday life, your doctor for example and find out what annoys them in their lives, doesn't have to be at work.