Nothing is either good or bad, Thinking makes it so. Though the Shakespearen thought seems to be cliche today, its true!!! All depends on your thinking. Everything is made in thought first. The birth place of all the things is in thought. I am reading the book "The Magic of Believing" by Claude Bristol. Its indeed a great inspiring book. Everything is first created in mind and then in concrete form. If there were no thought, there would be no ideas and so no development and we would have been in the primitive age itself.
The same principle applies to your personal life also. What you think, you are! He has suggested some mind experiments to help positive thinking and use the thinking power to achieve your goals! A MUST read!!!