Fight from a position of safety and strength

In our fight with maya we should not be in a position in which our strength, enthusiasm and senses will be unable to fight vigorously. Our Krishna consciousness movement has actually declared war against the illusory energy, in which all the living entities are rotting in a false understanding of civilization. The soldiers in this Krishna consciousness movement must always possess physical strength, enthusiasm and sensual power. To keep themselves fit, they must therefore place themselves in a normal condition of life. What constitutes a normal condition will not be the same for everyone, and therefore there are divisions of varnasrama–brahmana, ksatriya, vaisya, sudra, brahmacarya, grhastha, vanaprastha and sannyasa.

Srimad Bhagavatam 8.2.30 purport