Absolutely! Getting into the habit of writing every day was the single most helpful thing that I've ever done in my quest to become a writer. I recently wrote a post about how daily journaling changed my life. As you've noted, it's one of the best ways to beat writer's block. Not forever though it seems... Got to keep on going.
So sorry to hear that you've been having technical difficulties. Breaking my laptop is one of my biggest fears. I'm so over-protective of it because it really it my whole life. Also totally with you on the no-days-off thing when you work from home. We're lucky though, because we love what we do so it almost doesn't seem like work. :)