I have had that in the past and I've heard it called...analysis paralysis. Sorry you are having this go on. Do you feel anxious or is it more like manic rapid overlaying thoughts? Sometimes it's best for me to just make a choice and let go of perfectionism. Deep breathing helps and walking and just trying to let go and let things happen knowing I will survive it. Have you talked to a therapist or your Pdoc about this? I would write it down and remember to tell them. Hope your day gets a bit better.