When God plans our lives we live them thinking that we are in control, but that is only an illusion. God has planned everything. In the Bible God has said that He knows every time a person loses a hair on his head. There is even the famous Psalm that says God "Turns the Kings heart like a river."
The most famous portion (on this subject) of Scripture argues that God is a potter and he makes everyone differently. He then adds that no person has the right to say, "God, why did you make me like this?"
We humans are like clay and God molds us, that's cool with me.

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I will tell you the truth at all times, unless I am pulling your leg.