There are so many aspects of this disease that can bring one down and dampen one's attitude for life. The best tool I have at my disposal for combating depression or depressing thoughts is gratitude - and so, for those willing to join me, go ahead and finish the sentence:

I am grateful for...

life;
my wife, daughter and father;
the fact that this only affects my body and not my brain;
a diagnosis - so much better than not knowing;
I slept in a bed last night;
I didn't go to bed hungry;
my book got picked up;
plumbing! (last place didn't have it);
a beautiful day;
oh pfft...I could go on but it's someone else's turn