Max Lucado:

We are not much different than burdened travelers, are we? We roll in the mud of self-pity in the very shadow of the cross. We piously ask for his will and then have the audacity to pout if everything doesn’t go our way. If we would just remember the heavenly body that awaits us, we'd stop complaining that he hasn't healed this earthly one.

Our problem is not so much that God doesn't give us what we hope for as it is that we don't know the right thing for which to hope. (You may want to read that sentence again.)