When I held his hand, and he rubbed my fingernail (this is something he's done for "comfort" since he was little), and I knew he was getting better.
When I was reading Five Little Monkeys to him and in his very weak voice he finished my sentence "jumping on the bed".
When he wanted to eat a banana!
When his blood levels finally went up instead of down.
Watching him play in the playroom on the pediatric floor after we got to leave the PICU.
How much closer our family is now.