I really don't know what to say here. I'm not sure what I can say. This is completely tragic news, but as has been said, the best thing to do is remain hopeful. From what I do know about Nick, he seems like a very resilient person who is able to strive in the face of adversity, and I'm sure this will be no different. I wish you the best of luck, and I have faith that you will conquer this.
I think there have been few people in my (still young) life that have served a greater influence on me, not just musically, but also personally. As a guitarist and aspiring songwriter, I do greatly admire Nick's work. I love listening to the albums, getting into the music, and I so greatly respect someone who writes music and lyrics that amazingly well in addition to being a multi-instrumentalist and producer. But more than that, Nick's music and most of all lyrics have touched me in a way that few others have. The last year or so of my life has been incredibly difficult for me, and it was at the times when I was the lowest that I came to appreciate the pure poetry in his lyrics the most. I think the line that I have always identified the most with was: "When all's said and done, when you're wronged and deceived - then it matters the most what you choose to believe". The whole song stands alone as one of my favorite pieces of lyrics out there, and has succeeded in comforting and personally inspiring me the way few others could. Nick has a gift to convey emotion through the written word like few lyricists I've known, and his contributions to this world are not to be underestimated.
I just wish you all the best. With your heart and soul as compass, I will pray you find your way, and that happiness will follow close behind... and peace will fall on you...