1. To organize one's belongings. Dude, get your stuff together—I trip over something of yours at least once a day! Get your stuff together—we have to leave in five minutes and you don't want to forget anything!

2. To take action to become well-organized, prepared, or in a better state of life. You need to get your stuff together and finish packing so that we can leave for the airport on time tomorrow morning. I had no direction after college and drifted along for several years, until I got my stuff together in my thirties with a steady job and good relationship.