Dear XX,

I am writing these few lines to express my sincere thanks to you for your help with my preparation for entering college.

You have been a qualified teacher and even a better friend. Thank you for making study not a dull thing but a great joy. Your guidance and advice helped me to overcome difficulties in my study. In addition, your dedication and assiduous study have inspired me for a long time. You told me that proficiency in anything requires a great deal of determination and self-discipline. Without your help, I would not have passed the college examination.

Thank you for illuminating my voyage of life. My true gratitude is beyond the word’s description.

Yours sincerely,

XX