I'm lucky enough to live in a lovely village with beautiful walks right from my front door, so walking is a delight. I don't get hung up on the number of steps, I just try to have a daily walk. I think of it as a "dogless" walk - I meet lots of dog walkers but I don't want a dog and am happy to walk just for my own pleasure.
Sometimes it is an effort to make myself find my shoes and coat, lock up the house and head out for a walk, but I always feel better for it, both mentally and physically. If I don't get out at some point in the day, I start to feel restless and jumpy, and really miss my walking.
I realise, seeing some of the posts above, that I'm lucky to have no real mobility problems, and I want to make the most of my good health, and prolong it if I can.