Dear [Recipient’s Name],

I hope this letter finds you in good health and high spirits. I am writing this letter to express my gratitude and appreciation for all the support and assistance you have provided me with over the years.

Your kind and selfless efforts have helped me in more ways than I can express, and I am truly grateful for everything that you have done for me. Your guidance and encouragement have been instrumental in helping me achieve my goals and aspirations.

I am also writing this letter to inform you that I will be leaving the organization/company/school on [date]. It is a difficult decision for me to make, but I believe that it is time for me to move on to new opportunities and challenges.

I want to take this opportunity to thank you for being a great mentor and friend. Your unwavering support, dedication, and guidance have been invaluable to me, and I will always cherish the memories of our time together.

Please do keep in touch, and I look forward to staying connected with you in the future. Once again, thank you for everything, and I wish you all the best in your future endeavors.

Sincerely,

[Your Name]

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