If you refuse to see reality and look the other way to satisfy a dream or a wish, you are heading for trouble. Reality and the truth can not be ignored by wishful thinking. Ignoring it will result in poor judgement and bad decisions. Almost every decision we make is based on some assumptions. Hence, if these assumptions are wrong we will interpret reality and situations incorrectly. Similarly, the situation could become dangerous when we adopt ideas which are based on desires as truth. This will lead to a dream or fantasy reality which will result in one wrong decision after the other. The problem lies in accepting certain truths that do not exists. However, since we decided to use them regardless of the real experience, all the decisions will be erroneous. The dangerous part is that your mind can not perceive the errors and may consider the alternative reality as real. In psychological and psychiatric terms this is a delusion.