Name [here write the name of the recipient]
Address [write the address of the recipient]
Date [write the date of sending the letter]
Subject: [write down an appropriate subject for the letter]
Dear ____________ (name of the recipient)
I am writing this letter to thank you for _________________ (here write about the reason for giving a thank you). Your help and motivation was extremely important for me to tide over this __________ (state the situation which you were passing through).It was impossible for me face such an unfamiliar situation efficiently without your moral support. I feel very blessed to have you by my side in ________________ (write the circumstances which you were trapped in) hours of crisis. You are the best ______________________ (friend/relative) in my life and I would like to thank god for it. You gave invaluable suggestions which proved to be the turning point in handling the ___________________ (write about the current situation) comfortably.
Once again I would like to thank you for your generous support in the ________________ (mention about the tough situation in your life).Hope that you will continue to be my support in the future as well.
Name [write the name of the sender]
Address [write the address of the sender]