What is your understanding of this statement think and grow rich? Well, here is my:
Whatsoever thou doeth, always think of a better way to do it, because for everything thou doest, there is always a better way to carry it out, thou just need to find it.
PS: Thou canst not know the things of the Spirit, except thou be born of the Spirit, and if thou art not born of the Spirit, thou would not understand the things of the Spirit and if thou understandeth not the things of the Spirit, thou would be manipulated by the physical things around you, which could out thee at the mercy of the physical realm.
Thou hast been placed far above principalities and powers, so maintain that position, do not step down.