We live in an insane world. Feeling guilty for taking time off is normal in this crazy world. Feeling guilty for doing something "non-productive," like writing a poem, doodling, singing and dancing, is normal in this wild world. So you become overwhelmed.................because you live in an out-of-balance left-brain world. That's normal too.
We do so much mind work, and that gets us all clogged up, up there in the head, aka stressed. Left-brain overload can result in headache, anxiety, fogginess, or dizziness. We need a balance between right-brain and left-brain activities, the creative, intuitive side of us, and the analytical, rational side. They inform and need each other, but too much of a good thing either way doesn't work.
What to do? Swim a bit upstream and do a little less, at least temporarily until you can catch your breath. Become quiet. Take half a day. Do a right brain activity (creative and heart based) that resonates deeply. Could be meditation, a walk in the woods, some gardening work, doing some beading, singing out loud, doing some EFT (Emotional Freedom Technique), or taking a nap. All these activities take you out of your mind and into your body and heart, and ultimately help you regain mental clarity and perspective. Take a look at a recent post on the benefits of coloring in this context.
After you've had your mental health moment, time, or day, you might make a prioritizing list to sort out all that mind mush that got you into a tizzy in the first place. But now your mind is more rested. Make a chart by category, such as Work, Personal, Kids; then start with your most important to-do item in each category and go down to the least important item. When you see your list, or lists, you have a visual of what needs to be done. Now you can cross off each completed item with great satisfaction and feel you're in control again.