Sansom revealed earlier this month that he had been left homeless as he fought alcoholism and a gambling addiction.
But the 54-year-old told BBC Five Live that he is feeling better after being offered a youth coaching role and doing work with his first professional club, Crystal Palace.
"I've lost a lot and don't want to lose any more," said the former left-back, who has been sober for 13 days.
"I wake up every morning feeling great and you can't ask for much more."
The 86-time capped England player said he had received help from the Professional Footballers' Association.
"They have done everything," he said. "They have put me in places where I can stay, like a hotel, so I don't have to sleep on the streets. They don't want me to be homeless and sleeping rough, so they have looked after me.
"A couple of months ago, I was found sleeping in a church yard. I was there for about three or four days in different places. I used to have drink in the daytime and then crash out.
"I was only drinking three bottles a of wine a day. I was drinking slowly because I didn't have a lot of money on me.
"I'm in detox now. They (the PFA) have helped immensely."
Sansom said he had been given a job at Palace during their season-opening defeat at home to Tottenham on Sunday, and hopes continue in that role for the rest of the season.
"When I went to Palace, it gave me a massive buzz," he said. "Everyone was drinking, but I wasn't interested. I was just talking to people and I really enjoyed it. I think I'm going to do it for the rest of the season. It's just something great. I'm hopefully going to see Arsenal about doing my tours again."
He also revealed he had been offered a youth coaching role.
"It's magnificent and it's something I've wanted to do for a long time," he said. "I want to try to teach kids around about 12 years old because at that age they start to click and listen. This guy has offered me an opportunity and I've got to meet him at some stage."