I too was discouraged by slow recovery. I failed to account for my age mid-sixties at the time of my accident. I expected that when I got my cast off my arm and all the wires cut out of my mouth life would soon return to normal. Truth is, it took me months to be able to open my mouth wide enough to eat a hamburger.
But, on the positive side, many of my friends told me I was lucky to be alive. My response is: and even luckier that I'm not in a wheelchair or a vegetable!
My point, Keeping a positive attitude is so crucial to recovery. Be patient with yourself and celebrate every little achievement, every inch of progress. Keep busy and keep trying.
Most of my neighbors are amazed at the speed I turned three cords of logs into a stack of firewood, with a chainsaw and splitting maul. No wood splitter.