You have to constantly be growing in life, no matter what it is. Your mind, your body, your career, your bank account - EVERYTHING in this world is either growing, or dying. This isn’t my opinion, it’s a scientific FACT. Even something as small as a plant, if it’s not growing and getting stronger it’s shrinking and dying.
So never be complete, never be satisfied, always strive for more. More knowledge, more skills, more money, better career, better health and constantly be looking for ways to step out of your comfort zone and GROW.