Based on Bhagavad Gita Chapter 02, Text 16
Our present existence is bi-dimensional: we are spiritual beings residing in material bodies. Harmonizing the material and the spiritual dimensions of our existence is a perennial challenge. If we wish to make spiritual advancement, our aspirations have to be primarily in the spiritual realm: developing selfless, spiritual love for Krishna and all his children. However, when we wish to express our love through practical service in this world, our actions have to be primarily in the material realm: taking care of our worldly responsibilities and doing whatever we can to help others connect with Krishna.
How do we balance acting principally in the material realm with aspiring principally in the spiritual realm? The Bhagavad-gita (2.16) offers a precious insight: the material never endures, the spiritual never ceases.