I have recently missed some of my routines. That normally hurts me. But I have chosen not to hit myself in the head, and feel like a failure because of it. Instead, I put my focus in getting slowly but steady back to the routines I know is good for me. Small steps are what works for me. As example, I haven't hit the gym the number of times I wanted, so I decided to go there twice a week in the beginning, and then increase it to 3 or 4 when I'm ready. So if you suddenly get out of your routines, don't worry. It happens to everyone. The most important is, that you don't feel like a failure, but get back on track again in a good way.