This is one of the prime necessities for creative thinking and for healing. You must learn to concentrate all your thoughts on a subject of contemplation or an object in hand.
Concentration entails focusing our attention completely on a subject, emotion, thought, or idea.
We need to develop the skill of concentration of such a degree that nothing moves us from our work. There are no limits to how far we can extend our comprehension of the Divine Plan when we develop our ability to concentrate and observe. Otherwise, the rays of the Sun are everywhere and we still feel cold. We have a cold Sun during the winter, yet a few of those rays can make a paper catch fire. Such is the Mind.