Most of the people I deal with on this forum are very self motivated people, you sound like a real winer. You either need to quit complaining and pull up your boot straps so to speak, or go back to your couch potato lifestyle. To answer your question it could be you did not eat right on the day of the flush. You can't have any fat or eat after 2PM.
Plus when your following the protocol you need to rest, you can't be doing chores etc.
So my advice if you choose to do another flush would be block off two days where you have someone wacthing your kids so you can focus on the job at hand.
Hope this helps you out, some people just need that tough love.