Thinking is a purposeful mental activity. Most part of thinking is a conscious activity. At times when you are in deep thinking, even in your unconscious mind can also continue thinking even after the conscious activity stops. Thinking is at times regarded as two types of harmonious processes. One is the creative thinking i.e. The manufacture of ideas which is skilled by widening your focal point and looking at whatever potential come to your mind. The part is to resist enticement to settle for a few ideas which are well-known. The second part is to appraise ideas i.e. Critical thinking. This is skilled by tapering the focus of mind. In this process you need to sort out the ideas you have generated and then identifying the rational ones. Thinking is a normal bodily process, which is done without any guidance or any practice.