Thank you for reading my letter when a lot of work bothers you.
I want to thank you for allowing me to work here for ten years. I am happy to say that it is very comfortable to work here. I'm sorry to quit my job for a new job. As we all know, knowledge is endless, so I have to say that I need to recharge with a new challenge. Similarly, it's boring to stay here for ten years, and my present career has bound me.
I cherish the experience I have gained. I believe this will be common in my future career.
You are sincere,
Tony (member of extra band)
By the way, for reference only!