That really hits home. 99% of all injuries I've had, are from lifting TVs when I was in the TV repair business. They're just awkward, and no matter how careful you are, something is off-balance and you pull or tear tendons & muscles.
Keep a good attitude about the repair & recovery, and remember that today all you need to be concerned with is recovering, and you will have other days to concentrate on getting back up to lifting. I'd be discouraged too, but try to keep it that way and not let it go to depression and negative attitude.
Charles