Jim,
My prayers are with you and your dad, and your whole family. I cannot even begin to imagine what you are going through.
Re.
He confuses me sometimes, one day he will be thanking God for what he has, the next day he just wants it to be over with.
Try reading through Job.
Job 10:1, 18-22 "I loathe my life; I will give free utterance to my complaint; I will speak in the bitterness of my soul.
"Why didst thou bring me forth from the womb? Would that I had died before any eye had seen me, and were as though I had not been, carried from the womb to the grave. Are not the days of my life few? Let me alone, that I may find a little comfort before I go whence I shall not return, to the land of gloom and deep darkness, the land of gloom and chaos, where light is as darkness."
And in Job 38, Job recieved not the answer, but the Answerer (Peter Kreeft,
Making Sense of Suffering.
And it was Job, and not his friends who were upset that he was speaking such, who was counted as righteous by God:
Job 42:7-8 After the LORD had spoken these words to Job, the LORD said to Eli'phaz the Te'manite:"My wrath is kindled against you and against your two friends; for you have not spoken of me what is right, as my servant Job has. Now therefore take seven bulls and seven rams, and go to my servant Job, and offer up for yourselves a burnt offering; and my servant Job shall pray for you, for I will accept his prayer not to deal with you according to your folly; for you have not spoken of me what is right, as my servant Job has."
I hope that this will be of some comfort,
In His love,
-Grace