You have decided to leave your current job due to some reason. Write a letter to your manager. In your letter, tell him about the decision and mention the reason for it describe what you have learnt in the job request for a recommendation letter and experience letter

Dear Sir, I am writing this to inform you about my decision to resign from my position at the company. Since past four years, the role which was assigned to me, has allowed me to learn and grow leaps and bounds. However, since the last few months, I think that I have reached my learning […]