Too much thinking and questioning

An older, highly bookish, educated guy like me has plenty of time to think and to question - sometimes, too much. I think I may be getting better at judging when I am over-using my thinking.  Two or three possible questions to ask myself, to wonder about, maybe to look up answers to occur to me on just about any subject very, very quickly.  If I let myself get pulled into wondering, questioning, comparing judging, I can miss important deadlines and customary activities that I want to do, such as moving about, cooking, eating, putting out the trash at the right time, hydrating, shaving, etc.