If a person has no dreams, they no longer have any reason to live. Dreaming is necessary, although in the dream reality should be glimpsed. For me this is a principle of life.
In many ways we are a dream for people, not a reality. That counts in your mind. It shows how much you can touch people, and as much as you can try to give those people somehow it is nothing compared to what they live in their own mind, in their dreams, for you.
These things bring you to reality as to how fragile you are; at the same moment you are doing something that nobody else is able to do. The same moment that you are seen as the best, the fastest and somebody that cannot be touched, you are enormously fragile.