Write a letter to someone who changed my life

I finally wrote a letter to my youth leader when I was a teen. I struggled hard core with emotional issues, bullying, anorexia, bipolar, etc and so forth. She took me under her wing and made a huge difference in my life. I have wanted to write her for some time, and early this morning was inspired to do so. Hopefully I can find the correct mailing address. She would be in her 70s or 80s now, so the sooner the better.