Writers Block

My favorite teenage family friend is MOVING! Can't believe it. DJ, my good friend Laurie's son is moving to Colorado to live with his dad for his High School years! I am sooo sad!
DJ is one of my favorite kids. I taught him in Sunday school for years. He was an usher in our wedding! He's family! He is an all around a good guy, will be a great man someday. Laurie and Mark have done a great job raising him so far. He has spunk. Gets in trouble like all kids but his heart is GOLD and his love for family and friends shines through all he does.
We are attending a junior high graduation party for him later this month and Laurie has asked all of us to prepare a scrap book page for him with pictures and a letter to him.
I completely and utterly have writers block! What do you say to a 14 year old young man so he will impacted, supported and encouraged during these last years before he becomes a man?
I am stuck. So much I want to say and such a tiny space to put it all in! Hmmmm.....
How do you ever choose your lasting words?