Tomim tiyhe: Great point!
Many times Hashem withholds things from us (job, children, spouse…) so that we will daven or change something in our lifestyle and become closer to Him. For example, there have been people who were blessed in various areas in their lives when they thought it impossible – after they were koveia itim l’torah, or gave tzeddakah, or covered their hair, or were careful to say brachos when someone was nearby to answer amen…