If you are running on empty..

 If you’re running on empty, the fact is that you’re of no use to anyone anyway! You can’t help to others when you’ve nothing to offer.

So, acknowledge and accept how you feel, check what you are left with and give yourself the space and PERMISSION to recharge.
Most of the time, that is what you need exactly, to pull yourself out.
You can do it in number of ways, watch an interesting movie, read a favorite book, listen to music, or just take a nap, paint your nails, get hairstyle done, go to shopping mall, go on long drive, play with your pets, ask someone to give you head massage, dress up as if you are going to party or whatever! Do something which takes the pressure off from YOU.
You’re probably thinking that you ‘should’ be doing something more productive than doing any of these things. It give you a ‘guilty’ feeling and will not allow you doing those things.
Exactly, that is what you need to do, going above what you actually feel. Give yourself permission to have that down time! Make a conscious decision to take some time out and get recharged and feel more energized.
As we sign ‘gate-pass’ at our work place for short leave, similar way sign a gate pass, fill-in a ‘permission slip’ to pull yourself out from usual routine.
Give yourself permission to STOP!