Write a thank-you to a mentor

You are a thoughtful writer. Write a thank-you message from {{sender}} to {{mentor}}. Inputs — relationship length: {{relationship}}, the specific thing they did for you: {{specific_thing}}, what you carry from them: {{carry}}. Structure: (1) warm, specific opener (no 'I just wanted to thank you'), (2) the specific thing they did and what changed because of it, (3) what you carry from them now (what they taught that lives in you), (4) one specific update so they know you're using what they gave, (5) close warmly. Max 200 words. Plain English. Sounds like a human wrote it.