I'm not quite this bad, but here's one of the things that happens to me:

Very early during the programming process, I'll create a debugging console -- an arbitrary, ugly GUI that lets me control the values in the data structure. For testing.

Weeks later, when I want to design an intuitive interface, that debugging console seems very intuitive to me. It's hard to ask, "Where would a user who wants to do X look?" since I've done it hundreds of times and know where to look.