Politely decline offers to help with this gracious and appreciative rejection letter.
Free to download and print.
Dear {Name},
Thank you very kindly for your many offers to help out with {tasks} since {event}. I know how much effort you've put into it, and your generosity is truly wonderful. However, as I stated before, I really do want to take care of this on my own. Therefore, I am declining any and all future {gifts/task/offers} in an effort to create a new and healthy way forward for myself.
I hope you understand, and I do appreciate all you've done for me.
Sincerely,
{Name}