I was browsing through Betty McCray's blog and found a post about setting yourself an appointment at 9am each and every day if you work from home so that you don't let the start time for your day slide. Whether its a meeting with a client or a telephone appointment it ensures that you get your day started in a businesslike way.
I would also add the importance of dressing for business - not only does it put your mind in work mode but it also means that if you get a call from a potential client who wants to meet up almost straight away you're not rushing off to the bathroom to shower and dress and slap make-up on. (OK I'm sitting here typing this in my pj's but it is 5am and my excuse is I am jetlagged and heading back to bed for a couple of hours.!!)
Betty McCrays blogpost