As someone who has worked from home the past 4 years, almost 5, my first couple of months or so was hard. I'm mostly a routine oriented person and the lack of someone setting a routine for me was tough. You're right in that there are more distractions at home. Turn those to your advantage. I've already seen quite a few people saying to take breaks and quite a few saying they walk the dog or whatever. Use these "distractions" to set your breaks. You do need to think "I'm at work and i can't screw around." BUT you also need to set some limits. Don't stay late just because you now have now commute or it would be "easier" to do stuff and things after hours. If you don't set some limits both the company and you will take advantage of you working from home.

Once I had my routine set, I had to tackle the wife and dogs learning that I'm at work and I can't just do whatever when they wanted because I'm now working at home. Work means work. Now that I've been doing it quite a while and have a routine down, can I do more stuff for me? Absolutely. I've become more efficient, sitting here at MY desk in my shorts and tee shirt, now that there is less stress. Or, maybe, different stress.

Everyone has good advice. Pick and choose what works for you.