I’m not sure I’m exactly following the argument, but I’ll say this:
Everyone has a number of jobs to do in ‘redeeming sparks’. For one it may be resisting the urge to break the window of a jewelry store, for another it may be avoiding a bit of food that might not be kosher.
In each case, the correct choice makes one a better person and the world a better place. That we don’t understand how this can be is irrelevant.
Choosing incorrectly is a setback for us and for the world.
A person can't "choose incorrectly" if they have "free will". They can only choose what God wants or what He doesn't want. They are, after all, "free" to make choices. If they can resist the urge to break a window or avoid food, then surely they should be able to resist everything. Therein lies the problem.
This, of course, is utter nonsense. Man is by nature sinful. All one has to do is look into their own heart. One may resist breaking a window but they certainly won't tell Aunt Gertrude what they actually think of her latest hat. An honest examination of one's soul makes it painfully evident that we are by nature sinful creatures incapable of doing the things of God.