In control of God's will. Really? Who thinks that way? 
Here's a comparison: Suppose 2 people are given are rather complex, state of the art technology as a gift and the person who created it gave them the instruction manual and also his phone number and email address to contact his company, or himself directly, if you have questions or need assistance. 
Person #1 reads the manual and refers to it and contacts the company and the owner often.  He also advises person #2 to do the same, but of course that is up to person #2. So, you would say that person#1 thinks they are in control of the creator of this technology's will? Simply by following the creator's instructions?

 We have the manual and all the help we need is available to us to follow Christ and His commands as He Himself Wills. His Will is not something anyone has control of,  but finding out what His Will is, is no mystery.