This is such a loaded question because there are various ways to move forward, and it is different for every writer. In my experience, hitting the block is frustrating, as I’m sure those who have gone through the process before will agree. Usually, the process until that point looks something like this.
First, the idea of your story comes to you, or even just a name and face. And then, you’re off. You write, write, write, until your fingers are numb. It’s exhilarating. Knowing that you’re creating, building, shaping these characters and places is rewarding. But at every turn, you’re faced with choices, and to be honest, most of the choices you see your characters go through represent choices that we face in our very own lives- no matter how obscure they sometimes are. Sometimes they are easy to make and we quickly brush past them moving on with our day. These choices are easy, such as: What clothes to wear today? How do I want my hair to look? What kind of coffee do I want to order at the local coffee shop? But life isn’t always so easy. We’re faced with difficult decisions all the time.
Then the moment comes when your character has to make a choice. It may not be a choice between right or wrong, but it is most definitely a choice that will determine how the rest of their journey plays out. That can be daunting, especially if they take a path that may not resemble what you imagined the journey would lead to. We often get stuck on the ideals and plans for our created worlds, that sometimes we don’t see that, just as unexpected things in our lives alter our futures, so do the living breathing words you create. They grow, they change and you just have to be open to wherever the story may want to go. Don’t nail yourself to a strict guideline. Be flexible. Take Chances. Experience the story as you write it. You may be surprised at what you discover.