At least the popular Welsh midfielder is going in the right direction again after what has been over a year of injury misery capped by a viral infection that he admits 'knocked me for six' in recent weeks.
The Spurs and Welsh Player of the Year of 2002 has spent long chunks of the last 14 months sidelined thanks to hip and shin problems. Indeed, since the initial hip trouble back in September 2003, he's featured in just 27 of a possible 62 first team games.
Typically of his luck, just when Simon thought he was over the shin injury that required surgery in the summer, along came the viral problem that left him struggling for energy - naturally a concern for such an all-action player.
"It was difficult because I just thought I felt tired because I'd come back from injury," said Simon after a light session with fitness coach Alex Court at Spurs Lodge on Monday.
"I was training again and it was a natural thing to feel tired because I hadn't trained and played consistently for a long time.
"I felt bad and it got to a point where I had to say something because it didn't feel right.
"It was a demoralising feeling to be trying so hard and what I was aiming for was getting further and further away.
"I had a lot of tests and it's turned out that I had a viral infection which I'm relieved about, because I knew it wasn't just me. Now I can get on with training again and building up again."
Naturally, Simon has sometimes cut a low figure around the training ground of late, such a contrast to some wonderful times a couple of years ago, including arguably his greatest moment - scoring for Wales against Italy in October 2002.
"When I look back it's been a terrible year," he admitted. "The highs in football are so high you sometimes think it's worth the lows but this is low as it's been for me and I need big high to make it even again.
"I've had so many comebacks in the year, so many of what feel like pre-seasons, I hate it. I now have to do it again, but at least it's not an injury. I was knocked for six and now I'm building from scratch again.
"These things happen in football and it's hard to keep going but you would do it all again for the chance to play.
"It's been a horrible year but it's a New Year coming up and I have to look at it like that and be positive.
"I've started light training with Alex, our fitness coach, who has been excellent.
"I still have to judge how hard I'm working and I still have to have my blood tests every two weeks to see how my body is recovering but to be in kit and around the lads again has been great. At last it feels like I'm starting again."
It's an old cliche, but ask Simon Davies what present he'd want for Christmas this year and he'd probably answer 'to be playing again...'