Punk, I am not sure how to measure happiness but I have no problem getting precise measurements on sadness. You have had some bad experiences and even though you deserve to be bitter or depressed or both, I hope you can find some meaning in the time you have left above ground. I won't recommend anything other than a good dog who keeps you grounded. Mine reminds me that someone depends on me and I am needed. I just can't let him down, and he never stops treating me like I am significant to his happiness.
BTW - I enjoy your sharp-witted posts. At least keep me amused.