Duality is the expression of balance. When you are comfortable, you maintain or you seek to maintain. When you are uncomfortable, you seek to change. That is the balance. If you are always comfortable, you will not seek to change or you will seek to maintain. The change is what allows you to expand. Therefore, you maintain comfort for as long as possible in any given time framework, and subsequently you insert experiences that are in some capacity uncomfortable to motivate you. You generate less motivation if you are continuously comfortable, and this is natural.