Although this topic can be discussed at great length, one nice explanation was recently discovered and written about by Bhayahari dasa, a Washington, D.C. area devotee. He reiterates sastric evidence that compares the agriculturist, the rains and time. In order for grains to manifest and become harvestable and edible, the farmer has to sow seeds. Then there has to be rain, and lastly time must elapse in order for the grain to manifest. The planting can be compared to free will, and the rain to destiny.

Sometimes devotees think that Krsna will reveal EVERYTHING from within: things such as how to use computers, construction of buildings, cooking, producing books, keeping accounts, making music, and decorating temples. This ignores the principle of "God helps those that help themselves," or that "man proposes; God disposes." If we don't attempt or propose [act] why should Krsna do everything for us. Arjuna had to utilize military science to fight. He had to strain his brain and his muscle to the maximum.

Diplomacy CAN be used for Krishna, but don't try it unless you're expert and there's a good reason for it. "The conclusion is that diplomacy used for the service of the Lord is a form of devotional service." (Caitanya Caritamrta, Madhya-lila, Chapter twelve, verse 44, purport).

Henry Ford is said to have expressed the tenet that it would be easy to hire employees that could manage money, simple to find people who could handle finances, but extremely difficult to locate assistants who could deal with people. In his purport to Srimad Bhagavatam 3.29.17, Srila Prabhupada writes: "Friendship should be cemented between persons with mutual interests and understanding."