Worry not about tomorrow, for today has enough worries of it's own. For if the Lord provides for the birds of the air and the beasts of the field and every thing that crawls upon the Earth, how much more will he provide for you? Paraphrased Matt 6:25-34.
That's right people, He provides. Don't be afraid for your future, because your future is guided by Him. You choose where you go, he provides the means that you can reach that destination.
I once asked the Lord, "What should I do with my life?" And I got the most amazing answer from a Pastor.
You decide where you want to go and the Lord will bless whatever path you choose. There's no rigid and absolute destiny that everyone is required to follow...it's not chiseled in stone by the finger of God. Our Holy God has blessed us with free will and self-determination to decide these things for ourselves. If you want to teach...then teach. If you want to be a grease-monkey...then be a grease-monkey. If you want to be a free spirit of nature and frolick in the wilderness...then do so :). God will bless you wherever you decide to go. And God will use your life to touch others just by you living your life.