Yet somehow, he's managed to stay optimistic through it all!
Jack was recently spotted heading back to his car after a long day of rehearsals for Dancing With The Stars, and we're glad to see that he was sporting a huge smile on his face!!
It definitely looked like the dancing helped take his mind off of things as he waved to fans and the cameras before calling it a day!
We're so glad Jack has managed to stay strong through such an incredibly difficult time, and hopefully the competition will prove to be an uplifitng experience for him and his family!
[Image via PhamousFotos/Splash News.]