Some people are scared of heights, water, darkness, social integration, spiders etc, and others are not. If you were to place a spider in the hand of the fearful (blindfolded) with a thick glove, then fear would have no basis or grounds to develop as it is merely the association through cognitive thinking and the fearful energy they have attached to the idea of spiders that scares them. If the spider held the intrinsic power to project fear into the world then we would have no control over it and all of us would fear spiders. It is because we project the belief system and negative energy that spiders are dangerous. The mind is the springboard that works with the body allowing feelings to rush in, both working hand in hand to generate the fears that we house deep within us. The feelings we store inside us can only ever be overcome when we face them head on relinquishing them forever which in turn disempowers the human ego. We begin to replace negative energy with positive, powerful energy.
Unless we make a shift in our core thinking and begin to take the pathway back to our centered being then we will never hold the intrinsic power to accomplish any of the major goals that we seek to attain in our lives. We need to sharpen the correct tool to achieve the desired outcome. The same applies where a degree in physics cannot be achieved with extensive knowledge in mathematics. A change of direction and new area of focus and study is necessary to acquire the desired result.