I bet you know just how this feels! This is what happens to all of us sometimes, we just want it to happen less.
When we don't take good care of ourselves and either just run out of steam or run into unexpected stresses, we hit the wall and end up feeling pretty much that we've come apart. This is just temporary and most of us have learned, oh crap I've done it again, I just didn't think it through, didn't take into account all the stuff I was trying to do, how much time and energy it really would take.
The major key element is thinking and feeling, deeply, that "I deserve- I need - I want" meaning that it is really seriously ok to relax, have some time to yourself, time to hang out with friends and family, TIME FOR YOU! When we feel we are stealing time, sneaking it, it feels like an addiction. We have an awareness running in the back of the mind, thoughts about other things that need to be done, and alot of guilt accompanying the whole song, thumping quietly, preventing real enjoyment.
One way to work on this personal issue is to craft some realistic statements that express the truth of your options. Something like: "I can relax today, I trust that with the rest I get today I'll be more in the mood to get stuff done tomorrow. I've done it this way before and it's worked out, so it should be fine". These are my words, a way that works for me; it needs to be your own words, your own truth. Just keep working on it, you'll get it and you'll love it!
Please tell me what has worked for you, I love finding new ways to share with others that really help - we can work together!