I came across this video of 17 year old Kiersten Kelly.  She sings (quite well) and also plays the guitar (quite well too).  Better than I do anyway.  She is a little different than most of us who try to play guitar and sing.  Kiersten only has one fully functioning arm.  Basically an arm and a half.  I have posted a couple of videos of her's for you to watch. It may not be your favorite type of music, but it might give you pause to think the next time you think you might not ba able to do something.  Just give it a try.

Jason