Without the first step there is no other steps. The moment you put the first step opens new journey and drive you to the new world.
If you have something in mind you hesitate to move forward, listen the voice of one of the most wise man from china, the author of Tao Te Ching, Laozi.
Do not worry about how you need to deal with the obstacles during the journey. You don't know what will come up to you. It's future. The most important thing is current moment, your first step. Put your first step toward thousand miles, life will take care of the journey.