Very much this. Here's an excellent essay on the subject of "lullaby words", of which "just" is one. (The author suggests mentally replacing "just" with "have a lot of trouble to" in such formulations.)
Excellent essay. I strongly recommend it.
In addition to "just", it goes after "soon", "very soon", "should", "all", "only", "anything", and "all I gotta do".
r/Fitness does a weekly "Moronic Monday", a judgment-free thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. I thought this seemed like a useful thing to have here - after all, the concepts discussed on LessWrong are probably at least a little harder to grasp than those of weightlifting. Plus, I have a few stupid questions of my own, so it doesn't seem unreasonable that other people might as well.