I've just made a breaktrhough in my knitting: I'm now working with DPNs, also known as double-pointed needles. Most knitting needles have a sharp end (not too sharp!) and then an end that's covered with a permanent cap. This is what keeps the knitted work from sliding off the back end. Double pointed needles are designed without the cap, so both ends are "sharp" - and the specific purpose is so that the work can slide off the back end when you're trying to knit something round.
I've actually owned the DPNs for quite a while, though it's taken me some time to get up the gumption to actually learn how to do it.
I then did some google mania on my phone and found a great resource over at Purl Bee. They might want to consider calling their page "No More Tears," because I seriously was very close to giving up completely when I stumbled upon it. Following their directions got 'er done!