One result of the coronavirus pandemic: A lot of us are having trouble focusing on reading. https://www.chronicle.com/article/A-Side-Effect-of-the-Covid-19/248568
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This is familiar to me, as someone with cPTSD, anxiety, and depression. Hypervigilence and stress lead to mental exhaustion.
Nothing to do but try to achieve small tasks. Break things down into tiny, bite-size chunks. And be OK with only getting a couple of them done. Focus on the essentials--shelter, food, housing, bills. All else is less urgent.