Krishna's will is supreme in all matters. Even if I think I will do something, I will not have the power to do anything if the Lord does not sanction it.

To dovetail our will with the Lord's will is called saranagati, surrender. Surrender means peaceful life. All material objects are favourable for Krishna's pastimes, but if instead of offering material objects to Him we use them to seek our own happiness in this world, we will forget Him. Hence the merciful Lord has created this material world to test us. If we live here seeking material happiness, we will certainly forget Krishna. That the material world is meant for our testing is proof of the Lord's compassion.
One cannot apporach the land of Vraja by one's own will. Only by the grace and blessings of Sri Radha-Krishna is one able to reside in Vraja. Our independent will to reside in Vraja is detrimental to the cultivation of Krishna consciousness.
Although I had a strong desire to go to Mathura in April, Krishna had some other plan and I could not go. Now I desire to go to Mathura in October, but if Krishna thinks otherwise, there will be nothing I can do. If I try to do something against His will, I will become culpable.
By worshiping Hari one's body, mind, and self remain healthy. If one is averse to His worship, then all these three will become unfavorable.