As a person...a parent...a partner...I'm running out of steam. What is the solution?

The demands on us in life are never ending. What is the answer when you just feel like you are running out of steam? I heard someone once say to not think about it. It's pointless to antagonize about all that's overwhelming. Shut up, put up, and show up. I do. Often. Don't dwell...just handle it. The last few days have been stressful. Nothing in particular has happened. I just feel bad for the kids. I am running out of patience. The sound of their voices is driving me crazy. I have stopped hearing the content of their verbal diarrhea completely. I pretty much want to hide. Which of course, isn't going to happen. We spend an enormous amount of time together. The hubby is getting on my nerves too. I need a break. I need to recoup. Again, not going to happen. So what is the solution? What does one do when they are running on empty and refueling isn't in sight? This would be the fantastic part where I come up with an incredible answer, but I don't have one. I guess I'll muddle through until a great night of sleep refreshes me or maybe I just need a kick in the pants. As of now, my baby is refusing to go to sleep so I'll go sooth him, suppressing my desire to throttle instead.