Following our passion excites us and forces us out of our comfort zones and helps us grow. Your ego wants you to stay in your comfort zone and not take any risk. The conscious mind is the rational mind and wants to follow logic not feelings.
The subconscious mind is our feeling mind, that powerful mind that wants new ventures and the freedom to do and explore. People who truly successful in life follow their gut feelings and even if things work out they know that it is not the end of the world.