It's hard sometimes to get up after a fall. So many different reasons make it difficult. The key to making a strong return is finding ways to revitalize yourself. Revitalization can help you to see that things won't always be like this - in the middle of recovery. An important task of your recovery is to get back on track, so why don't make refreshing yourself a part of the regime. Take time to exercise or read an uplifting book. You could also visit friends you haven't seen in a long time (just be sure they're not in recovery as well. It may not be very refreshing).
Another refreshing idea is to get a massage! Those things are the best! You ask just about anyone who has has a professional massage. It really helps you to find out more about your true physical condition.