Answer:
My days are numbered. What am I?
The more you have of it the less you see. What is it?
The more you take, the more you leave behind. What are they?
I am a shimmering field that reaches far. Yet I have no tracks and am crossed without paths.
I belong to you but others use me more often than you do. What am I?
I met a man on the London bridge, he tipped his hat and drew his name, in this riddle I told you his name. What is it?