The Box mentality corners you into a single way of thinking.  Dont’ allow people and life circumstances to stop your motivation that provides cultivation.    Hang with those that have your answers and get away from those that have your problems.

Proverbs 23:7 (King James Version)

 ⁷For as he thinketh in his heart, so is he: Eat and drink, saith he to thee; but his heart is not with thee.