First of all there is always tomorrow. If you don’t have the get up and go today table your less pressing tasks until tomorrow or even a few days later when you will feel more like tending to them.
Second try breaking up your to-do's into more digestible pieces. Set your timer for 5 minutes and spend those 5 minutes doing those tasks. Making that phone call, tending to the laundry, filling out that form or what have you. When the timer goes off go have a seat, get some rest or just veg out.
If you have small children who adding to your fatigue and are wearing you out (I relate) see if you can lean on a close friend or family member to relieve you for a few hours or even a whole day. It can make a world of difference and boy how you miss those wild times. I feel the heat a bit more these days so my mom comes in to help me out when I start to get frazzled.
If this lack of energy is an ongoing thing think about revamping your diet. It may be a time to make a dietary change. More fruits and vegetables. Even water and a daily multi vitamin can have a profound effect.
Use this time to get some reading done.
And of course consult your physician to rule out anything more serious.
