Matthew 6:34 AMPC
[34] So do not worry or be anxious about tomorrow, for tomorrow will have worries and anxieties of its own. Sufficient for each day is its own trouble.
It is the natural human reaction to fret and worry about things you cannot influence or control. Man usually loves to have a sense of control, as he is able to direct the narrative, but when you are already limited by time, resources and nature, you just cannot win the battle of control. As was mentioned above, it is a natural human reaction to worry, even for those who know God, and that is why the message in the verse above is instructive for us. The verse above is taken from the first Sermon of Jesus on the mountain, as He sat down with His disciples. We have always maintained that though the crowd was there, the crowd was not Jesus' main audience.
You do not place a demand for commitment on an uncommitted majority. You do not make a demand for faith from a generation that has been brought up on fear and rumours, unless you have first changed the inner point of control and influence. This is what Jesus was trying to do here. I note that He did not rebuke His disciples for worrying; He gave them a reason to stop worrying, but also provided an alternative focus. This is also important: too many times, we tell people what to stop doing but we do not provide a viable alternative focus or activity. The natural mind is prone to activity - mental, psychological, emotional. He just cannot sit still; he needs an answer to all of life's questions.
He is unable to see beyond this immediate second, yet he wants to have in place a ten-year plan. Whilst there is absolutely nothing wrong with planning, it has to be done with the right mentality, attitude and focus. As the same chapter from where the verse above is taken makes clear, no one can add a single cubit to his height or a single day to his span of life by worrying? The birds of the air do not hunt, and they have no savings account, yet it is hard to find any of them falling to the ground dead due to hunger. The lilies of the field have no tailors yet they are always beautifully adorned. Not even Solomon with His riches had such beauty.
If God can take care of these creatures which are not promised eternal life with God, how much more will God take care of us in whom He has deposited a part of Himself? As it has been pointed out, rather than worry, put all your trust in God alone. Why worry about a tomorrow you have not seen, when you have a God who holds tomorrow in His hands? Each day has its own troubles, but this God also promises mercies on a daily basis. His mercies have not failed yet and He will not start today. He does not sleep or slumber, and He does not get tired. The One who made us in His own image is also invested in our success and advancement. Trust Him with your life. God's time of favour is here.