Isaiah 40:30-31 says:
 Even youths shall faint and be weary,
and young men shall fall exhausted;
 but they who wait for the LORD shall renew their strength;
they shall mount up with wings like eagles;
they shall run and not be weary;
they shall walk and not faint.
I don’t like these verses. I don’t like waiting. I go to the grocery store when the lines are shorter. I don’t like amusement parks because I don’t like to wait in line.
I want God to answer my prayers in my timing (which is basically immediately). I don’t like waiting for God to answer or to lead. Waiting drains my strength. Waiting makes me want to lie down. Waiting makes me weary. Waiting makes me faint.
So are these verses wrong? I don’t think so. I think these verses come from the long term perspective that we need to have. We faint and we get weary, but we need to wait on the Lord. We need to not rush to take care of things ourselves. We get impatient and try to do our own will because we don’t want to wait for God.
It may be hard for a while, but we do better when we wait for God to save us and lead us. That is the only place where we can find strength. That is the only place where we can fly.
I may hate it in the moment, but that is worth waiting for.