The power of your thoughts control your feelings and actions affecting your reality. When you constantly think negative thoughts, you are creating a web of negativity that permeates your feelings and your actions which manifests negative results all around you. The computer doesn't work right, the car breaks down, you have generally bad luck. When you switch over to positive thinking you generate waves of positivity that create good "vibes" all around and things seem to roll more smoothly and just go right. Positive and negative thoughts are more than just "thinking" they are forms of energy that you put out. That's why it's important that you keep your thoughts as positive as possible at all times. There's power in your thoughts, use them wisely.