Losing my touch in IT

I don't know what happened, at work I cant seem to function anymore while thinking about what might be wrong with certain things. Sitting at home at night, I usually end up figure everything out and than you have to explain why you couldn't figure it out before? I'm in a very high role and I feel like I might lose it or I'm just losing my touch in IT these days
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--Alexander Graham Bell,
American inventor
https://www.forbes.com/sites/travisbradberry/2015/03/24/how-successful-people-spend-their-weekends/#31a5b8b419c0