Why do dreams sometimes fail

Dreams sometimes fail because the dreamer expects to much. Dreams are usually the best possible thing that can happen to someone. If that happened the world would be chaos with serial killers that wont be stopped and robbers that get anything that they want. Many dreams dont come true because they are not backed up by hard work. Some people dream of becoming a professional athlete but dont put in the work to accomplish their goal. Even though it is still their dream they either dont want it to come true that bad or think that it will happen on its own and if it doesnt then it is no big deal. Some dreamers just recognize their dreams as a dream and that they would be extremely lucky if it came true and if it did not come true they would just move on with their lives. Some dreams dont come true just because of bad luck, like a car accident or other emergency that interupts the process of making the dream succeed. For example, Ismael Beah's dream was to be a famous rapper, but their was a war going on in his country where kids were forced to fight. He was captured and had to be in the army and could not become a famous rapper like he dreamed.