One reason we are so harried and hurried is that we make yesterday and tomorrow our business, when all that legitimately concerns us is today. If we really have too much to do, there are some items on the agenda which God did not put there. Let us submit the list to Him and ask Him to indicate which items we must delete. There is always time to do the will of God. If we are too busy to do that, we are too busy.
The life of faith is lived one day at a time, and it has to be lived - not always looked forward to as though the "real" living were around the next corner. It is today for which we are responsible. God still owns tomorrow.
If you are married, then accept that. Accept the husband that God has given you. If you are single, accept your singleness and take it as if today was the last day of your life. Don't be looking constantly to the future.