Letting GO of Worry

What If we knew for Certain that everything were worried about today will work out fine? What if we had a guarantee that the problem bothering us would be worked out in the most perfect way and at the best possible time ? What if we knew that even our worst fear would work out for the best ? What If we had a guarantee that everything thats happening and has happened in our life was meant to be planned just for us and in our best interest? What If we knew everything was okay and we didn't have to worry about a thing ? what would we do then ? we would be free to let go and enjoy Life.