Writing is work. It is not just feeling like you want to do something. Even if you don't feel like it you still have to do it.
You can't wait for the muse.
One way to get out of a rut is to set a time limit of say in the next 10-15 minutes write down 10 ideas no matter how stupid you think and choose one of them to further your story.
The act of writing is an effort. No matter how gifted you are, you still have to work. You still face things which you don't know immediately and have to think through the plot and how it all works together.