Worrying.

In Luke 12:25-26 Jesus says, "Who of you by worrying can add a single hour to his life? Since you can not do this very little thing, why do you worry about the rest?"

This message is amazing but in the day we live in it is seriously flawed. I am under the impression that life today is much more stressful and busy and demanding that it has ever been in the past. One can not go through life without worry. For example, I just got a 63 on my first chemistry test. That is not good. I can not fail chemistry so I am worrying as a result of the necessity to get better grades. If I didn't worry, I probably wouldn't care and so I would continue to get bad grades.

Where is the happy medium? Obviously Jesus doesn't want us getting stressed about things that aren't important in the grand scheme of things but we can not go through life not caring or worrying about anything.

I seem to have discovered an answer..
Philippians 4:6-7 says "Do not be anxious about anything, but in everything, by prayer and petition, with thanksgiving, present your requests to God. And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus."

Unless I am completely wrong, this passage is telling us to do the following.
When stressed or worrying about something, stop, pray about it and "present your requests to God." Because of that God will guide you to do what is necessary. This is something I can apply to my life this very second.. And I will go do just that.