I know you can do this...it's just wrapping your head around it and working out the quirks...it works a little different for everyone. You just have to want it enough to stick with it...it's slow progress that eventually gets you where you want to be that counts. If you try to push it too far too fast, you can burn yourself out and give up.
When I said walking more, I meant incorporating a little more walking in everything you do, especially for someone who is really out of shape (like I am

). It will add up over the course of a day. For example, if moving from your chair to the refrigerator has a short way and a long way, take the long way. I have three dog bowls to fill every day and I take them to the kitchen counter where I add hot water to make a gravy and then place them down for the dogs. But rather than fill all three bowls at once, and then stack and carry them to the kitchen counter, I fill one, take it to the counter, go back and fill the next one...and so on. So instead of one trip back and forth, I make three. That's what I meant by incorporating more movement in your daily life, not just by increasing your workout time.

Here is another idea. Instead of folding all your clothes at the dryer, and stacking them, and carrying them all at once to put them away, fold and put away one item at a time. Or a few at a time...add some extra trips in there. This is especially helpful for someone who is basically sedentary, because of health issues, and moves rather slowly. At least you are moving more, albeit slowly. The more you move, the faster you burn fat, and the more muscle you build, which also increases your stamina and your metabolism. Just make it a project to add a bit more to each day. That's where the pedometer can help you keep track and increase slowly but steadily.