Positivity in the face of Adversity

As I was cruising happily through my chill day today despite the normal bumps that go with day to day dealings, I was rudely slapped in the face by none other than brutal reality.
One of my very best friends has been diagnosed with a brain tumor.
 Needless to say - I was shocked, upset, sad, scared, angry and ready to fight.  But fight what?  Fight who?  Then I realize, this is a fight that simply is not mine.  This is his fight.  This is his struggle.  This is his survival.  I want to fight for him because I love him.  What I suddenly realize is MY fight is to be positive for him and around him.  Remind him of the good things no matter how bad the situation may seem.  I will be there for him and his wife when they need anything.  I will BELIEVE that he will get through this with that huge goofy smile plastered on his face.  I need to make HIM believe the same thing.  If I believe it, he will believe it, his wife will believe it and so on.  All together, we can't be beat.
I read a book once, The Power of Positive Thinking by Norman Vincent Peale.  I enjoyed most of it.  Very God based but so many good messages.  I had to laugh at myself when this is the book I thought of as I realized being positive is going to be the best thing for my dear friend.  He may not be the biggest fan of God, but one of God's biggest fans is pointing me in the right direction.
This also makes me think, what am I complaining about in my daily life?  Is it worth being negative about or can I turn it around?  Can I make it something positive that will lift my mood versus bring me down?  This applies everywhere and is yet ANOTHER cold slap in the face by brutal reality.  We, as people in general, don't need to bitch and moan about the small things.  Get out, get it done and love what you've done.  Didn't get it all done?  Really, is that a reason to give up and say "I can't"?  There are too many out there who literally can't do what you did regardless of what you attempted.
Syrupy sweet sentiment?  Yes.  Typical of ME?  Not even close.  True all the same.  Think about one of the people  you truly love, care about and have been through so much with - now think about the possibility of losing them to death.  Not having a fight, but death.  No second chance.  Then tell me you wouldn't do everything in your power to give them every last ounce of positive energy you could if it would make things better for that person.  You would do it, and it would help you too.  And so will I.