I will never forget - when I was visiting my friend in London, we were making dinner and I made a move to throw away the last bit of tomato because we weren't going to use it. She snatched it out of my hand and said, "We don't throw things away here! We use everything!" The reason for that is (other than the pound being double to the dollar!) that they go shopping for fresh produce almost every day. They don't stock their fridges with a bunch of items they expect to go to waste.
Although it's simple to grumble that you just don't have time to make the effort, you probably do. It's as easy as swingin through Starbucks for that coffee. Buy a few choice staples then pick up your fresh items every other day. You're much more likely to eat them.
My Asian fiance goes a step further, which I must admit weirded me out at first, but now I do it, too...when cutting up veggies, don't toss the rinds, the stems, the unused parts in the trash or disposal...they can make a fantastic broth when thrown in some boiling water! And, not that I know, but I bet they are chock full of nutrients!