Your soul is your life. Your spirit drives your body. First you think it, then you do it. Your mind tells your body what to do.

From a scientific point of view, how does a thought enter the brain? The thought travels from your soul to your brain. Our words are electricity. If you hear bad news, the words enter your ears, travel through your body and break your heart.
If you have a heart, you have a soul, cause you're alive.