Great topic.
I think the difference between Living or Existing is whether you have a purpose in life or not.
I know this lady at work who spends every night on the internet - from the time she gets home until she goes to bed, all she does is chat in rooms or play games on the computer. She's wasting her life away in one little room and has no real life friends.
Life is a gift - like a beautiful crystal pitcher. Some people put it up in a closet and only get it out for special occasions (or never). Others decide it's just too great not to use - so they set it on their kitchen counter and use it every day. I used to be the type to put it away in the closet, but over the years I've become one of those that use the pitcher every day.
Life is best lived "in the moment". For example, when I cook dinner for my family I can just "exist" and cook dinner because it's a task I have to accomplish all the while waiting for the weekend, or a vacation, or something to come in the future - just rushing through the task to get dinner over with. Or - I can enjoy the "moment"- put on music, pour a glass of wine, dance around the kitchen while I cook, visit with my hubby and catch up on the day. I can choose to live that moment of time - to make it a memory rather than a task.
My grandmother was a very independent and great lady. She had a stroke and spent the last 2 years of her life in a nursing home, she could not get out of bed without help and needed constant care. When I visited her one day I realized that she would have given ANYTHING to be able to cook dinner for her family again, to even do just the simplest of chores, to be home again and free. That day I made the choice to live life "in the moment" and not constantly pinning for some future event. Even the simplest of life moments are special - a hug from one of my kids, eating dinner together, going for a bike ride, even vaccuming the house - because that's what life is, millions of moments all strung together - and they can be either "lived in" or "existed in".
So - back to my first statement " the difference between Living or Existing is whether you have a purpose in life or not" - it's true. I have a purpose now - it's to really relish life itself, my health, my freedom, my family, to do all that I can while I can whether it's simple household chores, or learning a new fun activity. I choose now to spend time with family and friends, and I vowed to learn one new thing every year (ie: sucba diving, jazz dancing, etc) .Life is what you make it - and the more you make of it the better it is enjoyed - like the crystal pitcher that's used every day.