All in Leaning on God

Do you really know what tomorrow will bring you? Oh you think that you can surmise it based on the events of today, but in fact we can not. Life is fluid and ever changing, and many things are understood only by God Himself. So how does not knowing tomorrow make you feel, less human or more human? Does not being able to fully understand the world or something in it turn you towards God, or cause you to feel alone and insignificant?