Anyone who tells you writer's block does not exist has never had to write to a schedule. Robert Probst says so, then does something more useful than sympathise. He treats getting stuck as a stress problem first and a craft problem second, and starts with what is happening in your head rather than with the blank screen.
The posts here run long, which suits him. The Facebook piece opens by pointing out, kindly, that you have been posting into a social network as though it were a billboard, and works up from there towards building an audience past the people you already know. His Pinterest material separates personal from business use, because the two want different things from you.
His post on dreams asks a question most people answer too fast. Are you living what you say you want, or did you file it somewhere and stop looking? He refuses the easy answer. Most of it stays possible if you will line your choices up behind it and stay flexible about the shape it arrives in.
Read the writer's block post the next time nothing comes.