Let Go & Let God

I sit here wondering what is to become of my life. I've had a lot of things shake up my concept of the rest of my life lately. I know my life is in God's hands, but I still make decisions - I still screw things up sometimes. I know I'm supposed to trust Him & thankfully accept what He sends my way, but it's difficult not knowing what's going on.
My mom told me the other day that I shouldn't think so much "Just let things happen - God will provide". I appreciate her words, but my mind never stops thinking - attempting to put the pieces together - in a sense, second-guessing God's intentions.
I've been blessed in spite of recent problems, and though at the time, things were awful/horrible/inconceivably difficult, I could have had it worse. I'm beginning to see that now - hind sight IS 20/20. I'm sure things will look more cohesive in a few days/weeks/months/years, but, being mortal, I don't want to wait that long to see why these things come my way.