Often we do not learn that lesson. The proof of unbelief is worry. We feel we must help God work out the problem. Worry will help him solve my difficulty. So we eat our heart out with worry.
Prayer is just the opposite.
It places problems confidently in the hands of God. If we pray it must be a prayer that the Savior can initial. We all are careful about the things we endorse. We do not put our signature on everything. Likewise the Lord Jesus does not endorse every prayer.