Oh dear! You could certainly do with improving your memory. Did you know that the human brain is actually at its sharpest when we are in our twenties? By the time we reach our 30s, our brains are already beginning to lose cells. Try doing a few brain training exercises, and then build them up until you are doing a good range of them each day. If you have problems remembering where you left things, such as keys, consider buying a key holder to keep them safe.