We can be defined by a multitude of things. Career, possessions, family, friends, positions. All of this has the power to define and crush us. Loyalty in created things such as these over the Creator is a dangerous place to be in.
Out of all the things life offers for us to obtain it cannot compare to who we become. It is far more valuable to invest in who you are than what you have.
Every day I try to put into practice two things: Contentment and Gratitude. I believe these two are cornerstones of maintaining a sustainable lifestyle.