This is very common. Pretty annoying at first, but once I notice someone does that on the constant, I can zone out while they try to divert the story, and then

This is very common. Pretty annoying at first, but once I notice someone does that on the constant, I can zone out while they try to divert the story, and then return to continue the natural path of the convo. If it's every other sentence in a group setting, then I play a game of "how will that person turn THAT sentence into something about them?" It's a forgivable trait! But notice when you do it so you can be more present and empathetic. Discussion is more fun when it can go in so many directions rather than just funnel to oneself! :)