Are you not starting off with your own moment? Or have you not reached it yet?
For me, there wasn't any big aha moment for the overall theory. It was more that I came across it and thought "if Dramatica is what it says it is, of course it will be super helpful." Then I started reading the theory book and Narrative First. Back then, Narrative First had every article listed in order, and I think every analyses, pretty much on one page. I started at the bottom and worked my way up. When I was done I started working through Storymind and Dramaticapedia (not as easy to navigate).
There were several small aha moments along the way ("aha, that's why everyone was dealing with that characters problem, but why they also had another problem that no one was dealing with", "aha, that's how you separate throughlines", and etc.). But I was sold pretty early on. And the more I worked through it and read about it and the more I got it, the more sold I became. That process is still ongoing.
There was, however, a couple of big aha moments for me with the RS throughline. I wrote out a couple of paragraphs about it, but deleted it so as not to go into personal details. I wouldn't mind sharing all the details--linearly, you people have no idea who I am, what do i care if you know personal details that you would never be able to connect to me? But holistically my wife might see this post and know that, on balance, someone had that information that she didn't want anyone to have, so best not to do it--anyway, without giving too many details, my wife and I were taking separate stances on an issue when one of our daughters started yelling at us about something. We immediately came together as one to deal with the issue. It was like we went from being on opposite sides to the same team just like that. And it hit me that that was an RS moment. That's also when it clicked for me that the RS isn't "me and you" but "us" and what the difference was. It was pretty incredible.
There was another moment when I thought to myself that my family was having a Mind problem if ever there was one (note:i'm not great at analyzing, particularly at the time and particularly on the fly, it probably wasn't a Mind problem) so I decided to try to flip it to a Situation. Again, it was my daughter being mad about something. Instead of having the spat I had expected we'd have over the next hour plus (my daughter has strong emotions, and ONLY strong emotions) I told her to get in the car so we could go for a ride. There was no destination in mind. We were just going to be stuck in a car together for a while, no way to escape. I didn't say anything to her, just let her do all the talking. Instead of the hour or so I figured it would take for her to calm down, it took about ten minutes. (I have to end here, i'm verging on going into too much detail)
Anyway, those are the two big moments that really turned me on to trying to use Dramatica in every day life to deal with everyday issues rather than just using it to write stories. And even though I'm no expert, and often afraid I'm going to make something worse rather than better, I keep turning to Dramatica for suggestions and I think things keep getting better. That said, I can't imagine going another day of my life without being completely fascinated and obsessed with what Dramatica has to offer.