I'm using "Kind and Generous" by Natalie Merchant. I had a few songs in mind, based on the lyrics and message they spoke for me. I really love this verse:
"You've been so kind and generous
I don't know how you keep on giving
For your kindness, I'm in debt to you
And I never could have come this far without you
So for everything you've done
You know I'm bound...
I'm bound to thank you for it."