Resignation Letter That Keeps the Relationship

Write a resignation letter I can send to my manager. It should be short, certain, and leave the door open. FACTS Role: [TITLE] Manager: [NAME] Last day I want: [DATE] Notice in my contract: [WEEKS] Reason I will share: [ONE SENTENCE — or "personal decision, no detail"] Reason I will not share: [LIST] Offer to help the handoff: [YES — WHAT | NO] Projects mid-flight: [LIST] WRITE 1) Subject line. 2) Letter, 150–220 words. State the decision in the first sentence. Give the last day. Offer a handoff plan with dates, not a vague "happy to help." Thank them for one specific thing that is true: [EXAMPLE]. Do not apologize for leaving. 3) A shorter version if I need to resign in a meeting first and follow with the letter the same day (6 sentences I can say out loud). 4) A note to myself: what not to put in writing (complaints, the new employer's name if I marked it private, medical detail). If my requested last day is shorter than the notice period, say so and give me a sentence that asks rather than announces.