Welcome to Psych Central. Sorry to hear you have been through situations where you are losing focus. That happens to all of us. When I react to it in an anxious way I find it is even more difficult. Sometimes I tell the person "lost my train of thought...what were we talking about?" I probably would not do this with my boss because I try to keep impression I keep things under control.
You are not alone. There are many nice, caring people here. Feel free to private message me or any community liason by left clicking on their name underlined in blue to the left of the post and selecting Send a private message to .....[their name]. We are here to listen.
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I try to get exercise, yoga and other gentle stretching exercises and meditation to help me get started in the morning.