It is in the belief that something is possible that continually drives you towards pursuing your goals. In the moment such a belief is extinguished, so too is your pursuit of the dream put to an end. Ergo, the value of hope is equal to that of your desire as it is a necessary ingredient for your desire to even be pursued.
The various degrees of hope you entertain likewise affect your ability and willingness to pursue your dreams. The greater is the degree of your belief in something being possible, the greater is the amount of hope you will maintain and the more enthusiastic and persistent you will be in attempting to accomplish even your grandest of dreams.
To benefit from this knowledge, start thinking about your desire as being possible. The more often you do so, and the more extensively are you able to convince yourself that it is indeed possible, the more hope you will then possess.