One of my hobbies is trying to manipulate God.
I don't think it's a particularly healthy hobby, and it's certainly not a productive one, but what can I say? I'm really self centered, and like a car with a "pull" to one side or the other, I often find myself drifting over the line into this silly behavior when I'm not fully engaged in living an emotionally and relationally healthier life which Jesus calls me to.
My goal in the deals I offer God is to make what I'm offering so helpful, so useful to God, that God would have to be crazy to say no. And since we know God isn't crazy, it basically a full proof plan.
To steal from the Godfather, I make God an offer he can't refuse.