Paula Radcliffe says victory in the New York Marathon has let her move on after failing to land Olympic gold.
The Briton told BBC Radio 4's Today programme: "It won't wipe out what happened in Athens. Nothing will ever make up for that.
"But I'm moving on with my life, and this win is a good way to start."
She added that she never considered retirement even in her darkest days after the Olympics. "It never crossed my mind," she said.
"I knew there were reasons for what happened in Athens, and that once I got over those I'd be back to being myself again."
Radcliffe outfoxed Kenya's Susan Chepkemei in the final stages in New York to win in a time of two hours, 23 minutes and 10 seconds.
The time was almost eight minutes off her world record but she said: "That doesn't matter at all. Coming here and winning was all that really mattered.
"It was about proving anything to anyone - it was just about getting back to doing what I do and enjoying it."
The 30-year-old said she had not suffered like she had at the Olympics when she pulled up exhausted and distraught after 22 miles.
"I felt totally different. I felt totally myself. There was nothing of the dead an empty feeling that I had in Athens."
She paid tribute to the fans who had cheered her on in New York and said the marathon was still her favoured distance.
"There was a hell of a lot of British support out there and thank you very
much for that," she added.
"I was just confident in hanging on and running hard in the closing stages to
win the race.
"I think the marathon is still my future."