I've had admissions officers tell me that a year off is a good thing, so long as you have a reason. The best part: they said that if you used that year to do something you love, that's fine as well. The example they gave was that they had an applicant who loved snowboarding. They took a gap year to just snowboard, all the time, because they knew they would never get a chance to do such a thing again.
In my case, I took a year off because I felt that I wasn't able to get my application together. I've been working for this year, 9-5, full time. At the same time, I've done some volunteering on the side, spent some time with my hobbies. I think it's been a great experience for me. I've grown as a person, and I'm more excited to go back to school than ever.