Overthinking and perfectionism, in many areas of life. This leads to problems in various ways:
-unable to make major house repairs/renovations in a timely fashion, because we consider every possible pro and con. Repeatedly. Also being worried that something won't turn out as well as imagined, so project is never started.
-simple writing tasks, like sending a quick email or post, take forever sometimes because the wording has to be just right.
-unable to get rid of stuff because I can think of a dozen different uses for something (or maybe the kids will want to take it apart, or maybe we can use it for parts, or....)
This. Totally this.