As I was walking to work in Downtown Chicago and doing my best to bypass the slippery remnants of the latest snowfall, I realized how distance can be relative. Here are a few examples: 1. Temperature – What would ordinarily be a short walk seems endless on an extremely hot or cold day. Even a drive is torture, if the heat or air conditioning in the car won't function when needed. 2. Terrain – A few steps can take forever if you're trying to negotiate an icy patch. I know this for a fact. (g) Swimming a few feet against the current can seem like a mile. 3. Injury or Illness – If you’ve hurt your hip, leg, foot, ankle, etc., walking a short distance can be time consuming. If you’ve injured your shoulder, arm or hand, lifting that member or moving it a few inches can be a nightmare. It may seem like traveling to the end of the world for someone with heart disease or bad lungs to walk across a parking lot from the car to a store or restaurant. Even if they're dropped off...