''Do Not Worry About Tomorrow''

“And why do you worry about clothes? See how the flowers of the field grow. They do not labor or spin. Yet I tell you that not even Solomon in all his splendor was dressed like one of these. If that is how God clothes the grass of the field, which is here today and tomorrow is thrown into the fire, will he not much more clothe you—you of little faith? So do not worry, saying, ‘What shall we eat?’ or ‘What shall we drink?’ or ‘What shall we wear?’ For the pagans run after all these things, and your heavenly Father knows that you need them. But seek first his kingdom and his righteousness, and all these things will be given to you as well. Therefore do not worry about tomorrow, for tomorrow will worry about itself. Each day has enough trouble of its own.''

- Jesus Christ

Also...

Look To This Day

Look to this day:
For it is life, the very life of life.
In its brief course
Lie all the verities and realities of your existence.
The bliss of growth,
The glory of action,
The splendour of achievement
Are but experiences of time.

For yesterday is but a dream
And tomorrow is only a vision;
And today well-lived, makes
Yesterday a dream of happiness
And every tomorrow a vision of hope.
Look well therefore to this day;
Such is the salutation to the ever-new dawn!

- Kalidasa