I too am left handed but I play a right handed guitar upside down like Libba cotton. I have a 30 year old tab of her "freight train" somewhere that I used when I was learning to play. the only reason I don't play a left handed guitar is that when I started ,the only guitar in the house belonged to my right handed brother so I borrowed it and taught myself to chord upside down. Anyway to September Girl, I have taught right handed people to play and the best success I've had to overcome boredom is for you to put the formal instruction methods away for a while and learn to play a song that you really know well and can sing along with. maybe something simple with 2 or 3 chords. Believe me it will inspire you to learn more.