In a comment, Todd wrote:

http://blogs.msdn.com/ericgu/archive/2004/12/09/278797.aspx#278985

I have a few thoughts.

First, it takes a while to get burnt out, so you can't expect to get un-burnt-out in a week.

For me, there have been a few things that have worked well:

  1. Change the situation that led to your burn out. In my case, it was mostly job-created. If you can't address the root cause, it's hard to get better.
  2. Make a list of the things that you haven't been getting done that you'd like to get done.
  3. Work at the list, slowly.

So what other advice can you give?