Most of the things in our lives are all taken for granted. We never notice the simple lucky things happening to us. Are you still going to ask for more if you're already complete? That you can see clearly, you can walk, you can talk and many more?
You're already so lucky when you were born that way, because there are other people who have nothing to do but to accept what they are. There are even handicap people who can do what you can do but you're just too lazy to do those. The reason for this is you're too confident of what you had.
Try to play with your mind. You don't have to be intelligent to think about simple things. What's important is you know how to observe and that's what matters.
There is even an instance when you even forget to thank God for the new day He has given you, and sometimes you'll wake up with a frown face.