1 Do not boast about tomorrow; for you do not know what a day may bring forth. 2 Let another praise you, and not your own mouth; someone else, and not your own lips. 3 A stone is heavy and sand is weighty,but vexation by a fool is more burdensome than the two of them. 4 Wrath is cruel and anger is overwhelming, but who can stand before jealousy? Source

31 So then, don’t worry saying, ‘What will we eat?’ or ‘What will we drink?’ or ‘What will we wear?’ 32 For the unconverted pursue these things, and your heavenly Father knows that you need them. 33 But above all pursue his kingdom and righteousness, and all these things will be given to you as well. 34 So then, do not worry about tomorrow, for tomorrow will worry about itself. Today has enough trouble of its own. Source