We are awfully good at thinking we know best. One of our problems in prayer is a tendency to tell God what to do. We need to learn rather to let prayer be a time when God works through us.
As Andrew Mayes says, in "Beyond the Edge", "Effective prayer is, then, not about seeking to influence God but about allowing God to do extraordinary things in us. But it requires of us the ability to silence our own admonitions and advice-giving to God, which can be a feature of intercessory prayer - as if we were advising God what he should do next. It requires us to come to a place of vulnerability and receptivity before God."