It is a physical impossibility for a negative mind to generate positive thoughts.

When you allow yourself to dwell on the negative aspects of life, negative thinking expands to fill all of your thoughts until there is no room for positive thoughts to grow. It becomes an endless cycle.

The habit of negative thinking generates more and more negative thoughts, which the mind attempts to turn into physical reality. The result is a life of despair and hopelessness. Develop the habit of eliminating negative thoughts the moment they appear.

Start small at first. When you first hear the inner voice that says, "I can’t do this," put the thought out of your mind immediately. Instead, concentrate on the task itself. Break it down into manageable parts and complete them one at a time. When the job is finished, tell your doubting self: "You were wrong. I could do it, and I did!"