I do this and carry a pedometer at almost all times since back in October 2012. The last time I didn't reach 10,000 steps in a single day was June 5 of last year so I'm less than 3 months away from making a full year of at least 10,000 steps every day. I've been averaging somewhere around 17000 steps a day over the past year and a half, and a lot of that is because I try to make that 10,000 every day, although when I first began I was more okay with just trying to average 10000 per day.
My worst day was the day influenza laid me out, only shuffled out a little over 1500 steps between the bed, the bathroom, the kitchen and the easy chair in front of the tv. Biggest day was a day of hiking in May last year where I got over 53000 steps counted.
I know, it's strange, but it was really easy to just start a column keeping track in the spreadsheet I keep to track blood sugars because I have type 1 diabetes.