Interesting. I have this exact same problem. I gave up applying for regular jobs eventually as it was so demoralizing. Only work contracts through contacts now. It pays the bills, so I can’t really complain I suppose
You're definitely not. I often hear people describe it as multitasking. My wife excels at multitasking but I perform better having my complete concentration on a specific task (the one exception being listening to music).
I can't even have the TV on for "background noise" like some people like to because you can guarantee it will completely take my focus away from whatever else I'm trying to concentrate on.