Look at the birds in the air;
They do not sow or reap
or store away in barns.
And yet,
your heavenly Father feeds them.

Are you not much more valuable than they? (Mathhew 6:26)

I still remember during one of my Sunday school many years ago, we sang a song like this. I was very young that time, and I did not know how important the song would be to me later. I have met failures many times. Every time I want to give up, that song will creep into my mind. I will reflect again the verses........... Yes, God is good and wise.
I read the Bible many times, and every time I come to this verse. I meditate for a while, thanking God for reminding me not to worry about tomorrow. His gift for me is the 'present'.

Who of you by worrying can a single hour to his life?

(Mathhew 6:27)