Personal transformation (evolution) is achieved from the motivation caused by pain. The pain caused by death, a health-scare, poverty, bereavement, divorce or some other life trauma event.
When that pain fades, so does the ‘motivation’ to continue the personal growth. Old habits return, and eventually the old poor results in life will return also. The phenomenon of ‘inertia’* teaches us that it would be criminal to allow your forward momentum to die. It takes huge energy to move past the wall of inertia that exists, having done so it would be criminal to allow your forward momentum to wane and die.
As Charles J. Givens explains, it takes huge energy to achieve initial results, however forward momentum & propulsion can yield ever increasing returns.
Don’t let your momentum die!