I believe there are three strains of writer's block, and each calls for a different solution. But they all demand the same resolve: you must never give up.
Traditional publishing seems to be mentally moored in a slow-lane ethos. What if you don't have the luxury of time to publish a book?
Social media is a key element of many authors' marketing plans, but you're making a mistake if you focus on book sales — especially right out of the gate. Start early, take it seriously, be social, and you may find success promoting on social media.