My dad made me change my first flat tire on my car myself. Fortunately, it went flat at the house. It took me about three times as long to do it myself with him watching and walking me through what I needed to do as it would have for him to have just done it. I didn't much enjoy it at the time, but I did have a sense of satisfaction in knowing that I "could" do it if I needed to and not have to wait on, or rely on, someone else do it for me.