Think of today. What will today give you. That is the most important thing you need to be worried about. There are already enough worries for today. Heck, who knows if there is another tomorrow to even be worried about. What you should be doing is living life to the fullest. Enjoying every moment that comes to you as it comes to you.
carpe diem, sieze the day. The power is in the now. What will you do now, that your future self will thank you for.
“Take therefore no thought for the morrow: for the morrow shall take thought for the things of itself. Sufficient unto the day is the evil thereof.“