God is amazing.  The things that He does are beyond my comprehension.  In my pilgrimage as both a believer and a pastor, I am learning that God works best when I strive the least.  When I am worried, I'm not trusting in God's love and willingness to act.  When I drive myself into fatigue, I am depending on my resources and not the incredible power of the Creator of the Universe.  When I rest in faith, God responds and meets the need.  When I step back from trying to make things happen, my faith frees God to accomplish the things He wanted to do all along.
God doesn't need me in order for Him to accomplish His will, but He chooses to answer prayers and bless the faith of those who trust Him.  He can see right into our hearts, and He knows if we are resting or wrestling in our spirits.  He knows if we are depending on His resources or counting our own chickens.  He can read the depths of my heart and see if I am clinging to His perfect peace or grasping at straws to deal with my next set of problems.
If I'm to be honest with myself, I've got to realize that God doesn't share His glory of accomplishment, and that destroys my pride.  Even if God lets me participate in the thing that brings Him glory, I am responsible to give up to Him all the glory when He brings things to pass.  The best way I know to say it, is that I'm a bystander to His glory.  I have the awesome privilege of being a part of bringing about His will on earth and basking in the glory of His power and pleasure; yet, all of the power comes from Him--the weight of the work rests squarely on His shoulders--and it is my blessing to stand back, and to watch, and to be in awe!