"There must enter into your heart whole new attitudes toward your entire life. If you are to branch out beyond just a time of prayer each day, other parts of your life--and even your whole viewpoint of life--will have to be altered. This new attitude must come for a very special reason--so that you may go on deeper, still deeper, into another level with your Lord.
To do this, you must have a fresh attitude toward yourself as well as toward the Lord; it is an attitude that must go much deeper than any you have known previously.
To do this, I introduce a new word to you. The word is abandonment.
To penetrate deeper in the experience of Jesus Christ, it is required that you begin to abandon your whole existence, giving it up to God. Let us take the daily occurrences of life as an illustration. You must utterly believe that the circumstances of your life, that is, every minute of your life, as well as the whole course of your life--anything, yes, everything that happens--have all come to you by His will and by His permission. You must utterly believe that everything that has happened to you is from God and is exactly what you need.
Such an outlook towards your circumstances and such a look of faith towards your Lord will make you content with everything. Once you believe this, you will then begin to take everything that comes into your life as being from the hand of God, not from the hand of man."
There are so many times in my life where I thought "man, if I could just have _________", or "if I was ________ instead of here, then I'd be happy." So what did I do? I tried to change my situation by any means necessary. I would manipulate people, including myself, in order to change the course of my life to the place where I believed I would be most "happy". In the end, though, I realized that we act like this because we're afraid that God doesn't know what He's doing.
That's ultimately what it comes down to. What does it mean that God is sovereign; that He is all-powerful and all-knowing? Those aren't just $5 words that we throw out when someone asks us to describe God--they mean something. If God truly is in control, then that means that no matter how you got to where you are right now--whether through truly seeking God or by "mistakes" that you've made along the way--God has at the very least allowed, and at the most actually orchestrated first-hand the events and outcomes in your life to bring you to where you are. He has you right where you are for a special purpose: to draw you closer to Himself. Whether there are good times, hard times or a little of both in your life right now, it is exactly what you need.
Can we trust God enough to believe that? Because once we can, we become free. How can we worry when we understand that right here, right now is where God is meeting with us, is drawing us closer, is burning away everything in ourselves that is not Him. God is big enough to work all things for our good. He's bigger than our mistakes, our insecurities, our confusion. He doesn't ask for us to understand why we're at where we're at in life, or the grand plan for our existence. He doesn't give us a list of "to-do's" or "to not do's". All He wants is for us to turn to Him; to give up on our own efforts to make life comfortable and secure and instead embrace His sufficiency.