Part of dealing with writer's block, whatever has sparked it, is accepting that it is inevitable to have periods of downtime. Sometimes block has to be faced head on, but sometimes it's better to trust your own process, which may involve periods of not working, or working less. In any case, this simple acceptance may at least ease the anxiety associated with your writer's block, and thereby shorten its duration.
If your writer's block is going on longer than you're happy with, more action might be required. In that case, this longer article on writer's block might be helpful.