I.E. Say if you wish you will become a millionaire and then keep thinking you will get a break soon. This belief while nice is VERY unlikely and will soon lead to you liking life less because you feel you are missing out. This is not true and can lead to heavy depression.
What exists, exists what is, is. Even though we wish otherwise life is tough and must be defeated not with wishes but with reason and hard work. Living in a fantasy world while good in no way helps you...