Hard to say. Travelling just should be a necessity of life, because things will happen to you that you can never imagine, good or bad.
You may find love and base the rest of your decisions around said person, or you may befriend an entrepreneur who offers you opportunities, or you may just find an easy job at a small shop/business and settle down in a distant town that suits you.
Just sell everything you cant carry with you, lock up invaluable things somewhere, then take all your money with you and save just enough for a ticket home when the time comes.
Its scary, but if I could do it by myself at 19, Im sure most people can, and the lessons you learn from it are priceless.
Infact Im in need of a backpacking trip again to cure my cynicism.