Loved this post by Gus Mueller:

However much time I’ve been doing this for, and no matter how much practice I put into it, there’s one thing that always sneaks up and pulls the rug right from under me. It’s usually between major releases, but not always. It’s a period of time where I’m pretty lost, and I don’t know what to do. I have feature lists, I have open bugs to fix, and I have an outline of where the app is going. But I feel mentally incapacitated, like I’m getting nothing done.

We’ve all been there, but it’s nice to see it explained so well.