Based on Bhagavad Gita Chapter 02, Text 61
The greatest obstacle on the spiritual path for most of us is the desire to enjoy material pleasures, especially anti-devotional material pleasures. Because most of us have indulged wantonly in such pleasures during our pre-devotional life, the memories of those indulgences keep piercing us like pointed daggers.
Additionally, our contemporary culture bombards us with provocative stimuli, thereby arousing and aggravating our past memories. These stimuli, figuratively speaking, not only prevent rust from forming on our dagger-like memories, but also sharpen the dagger so that it hurts more. Consequently, we often succumb not because indulgence is so pleasurable, but because resistance is so unbearable.
When we succumb repeatedly, we feel helplessly trapped: we can neither erase our past memories, nor evade the present stimuli. How, then, can we save ourselves from being pierced by dagger-like desires?
By constant engagement, declares Gita wisdom. The Bhagavad-gita (02.61) recommends that we blunt the dagger of desire by engagement in devotional service (yukta asita mat-parah). No desire can grow within us unless we give it time and thought. If we offer all our time and thought to Krishna, then the resulting divine absorption leaves no scope for worldly desires, which thereby become blunted.