I think writer's block can be very crippling, if you let it be. I have advised my husband, who is an author to view it as a "time out". Time away from writing, use it to research for another book, find pics of people who most match your characters etc. Don't let it bring you down. Own the writer's block. Accept it happens. As an artist, I deal with "artist block" myself.
Same principle. Own it. Accept it. Embrace it. Move on from it. Learn from it.