It is a choice that with some effort we can all learn to make. The emotional level has, by and large, been the most neglected. We place a premium on mental development and in recent times we have been more and more obsessed with our physical shape - but the emotions, we have paid very little attention to. As more and more people are realizing, however, it is our feelings rather than our thoughts that have the greatest impact on our immediate surroundings, in our lives and on the world at large. The level of thought is at a higher vibration than emotion and is therefore somewhat insulated from the physical.
Thought precedes action but it moves through the level of emotion before it can reach the physical.
Thought can drive one crazy, but the emotions can make you physically ill and bring about all of the undesirable conditions you can imagine in life. The emotional level is next to the physical and has a direct impact upon it. Ignoring the emotions has been an error of the worst kind. What He meant was that like attracts like. What we think is important.