Former champion boxer Ricky Hatton said his proudest achievement was "the fanbase that I had", but admitted to feeling like he had "let down 30,000 people" when he lost to Floyd Mayweather.
In a frank interview about his boxing career, breakdown and rehabilitation, the former Light Welterweight and Welterweight champion said his depression was "about the size of a one pence piece" after losing to Mayweather in 2007.
He spiralled further into depression and alcohol abuse as his career and personal life crumbled.
Ricky Hatton said he believes he would have retired tonight even if he had managed a win.
He said: "I got in the best shape I possibly could but if I hadn't been hit with that body shot I would have just scraped over the line with a points win and I honestly think I would still be telling you all the same thing."
A fighter knows and I know it isn't there any more. It's too many hard fights, I've burned the candle at both ends, I've put my body through the mire in and out of the ring but it doesn't matter how hard I train, I couldn't have done any better.
I'm a happy man tonight. I don't feel like putting a knife to my wrists. I have got the answers I needed. I got the opportunity and I got the answers and no matter how upsetting it is, I have got to be a man and say it is the end of Ricky Hatton.
Ricky Hatton announced his retirement from boxing after his ninth-round knockout by Vyacheslav Senchenko in Manchester, insisting: "I needed one more fight to see if I had still got it - and I haven't."
An emotional Hatton said he would devote his future to his family and his promotional activities after coming to the conclusion to call it a day despite having initially suggested he may consider fighting on.
A badly bruised Hatton said: "I found out tonight it isn't there no more. I'm a straight-shooter and I tell the truth. I can look at myself in the mirror and tell myself I did my best, but there is always an excuse to find."
Ricky Hatton cut a dejected figure in the ring after recovering from the crunching body shot which gave Vyacheslav Senchenko victory and stunned a previously raucous, 16,000-strong MEN Arena crowd into silence.
Hatton's trainer Bob Shannon admitted his boxer seemed to be distracted by the explosive atmosphere that the Manchester Arena provided.
"He wouldn't give me any eye contact when we were in the ring and the noise was that bad when I was trying to get him to work his jab," he said.
He added: "We're really, really disappointed. We knew the opponent was an excellent opponent. He was getting caught coming in. He lost his concentration probably after the fourth round and was getting caught."