“Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.” Mark Twain
You don't have to know where the staircase is going, sometimes you just have to take the first step. I think it's Martin Luther King, and I think he said it slightly better than that.