I am well aware that, when it comes to preparing to give a talk at a conference, "practice makes perfect". The problem is that, realistically, it tends not to be possible to find an audience for more than one or two run-throughs, so the only remaining possibility is to practice on my own.
Unfortunately, I have always found this to be basically impossible – it's very hard for me to get over how weird it feels to be "talking to myself", and if I do try to force myself to proceed, I always find myself getting horrendously tongue-tied in ways that I don't in front of a live audience. This almost seems like the opposite problem from what many people experience, but I find that the presence of an audience gives me energy and helps to get my brain in gear. I'm curious as to whether other people have the same problem and possible techniques for practicing more effectively.