Yesterday is behind us, tomorrow lies ahead and we can only live for today.
Paul wrote to us a most comforting note concerning anxiety, mental pressure and frustration. God's advice is this: brethren I count not myself to have apprehended: but this one thing I do, forgetting those things which are behind, and reaching forth unto those things which are before, I press toward the mark for the prize of the high calling of God in Christ Jesus. (Philippians 3:13 & 14)
Jesus himself advised us that each day has enough evil in it for itself. We need not to be anxious for anything, nor spend our time looking at the mistakes or victories of yesterday or worrying about our tomorrows. Our Lord said, "It is impossible that offenses must come." We are asked to pray, give us this day our daily bread and forgive.
It is impossible for us to not have natural plans for our lives. But we do have this rest, God will make the final decision on what will come to pass each day. Because we are his, what ever he decides, we know that our loving heavenly father gives us the best. When we see our God face to face, then we will know how much he has loved us.
Beloved, there is a time and a season for all things. Hold fast to the word of God, love the Lord your God with all your heart and love the brethren. Give thanks and praise for all things and live one day at a time. This rest will do you a world of good.