Everything you do for your child -- every appointment, every therapy, every intervention, but also every smile, every hug, every conversation -- makes a difference.
But you're also making a difference in the world.
Every time you give information about your child's disability to an educator, you make a difference for the next child.
Every time you give advice in a support group or online forum, you make a difference for that parent and family.
You are a force for good.
I found this encouraging and uplifting words on http://specialchildren.about.com/od/needinspiration/ig/Notes-of-Encouragement/You-Make-a-Difference.htm