Have you had a physical recently? Sometimes after 45 being tired and apathetic is a symptom of something else. It could be that you're starting menopause, low on iron, or any number of things. Right after my 45th birthday I started feeling so tire that sometimes I had to come home from work to lie down. I finally went to the doctor and found out I was 14 weeks pregnant. Please get checked out then start planning projects. Do your choosing one evening, your fabric planning the next, cutting the next then you'll be ready to start sewing the next night.
I had to laugh when you said your workplace was toxic mentally. I used to run a chemical warehouse--it was extremely toxic both ways.
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