For me it is just collecting mounts. Why? Because doing that takes me through most of the content in the game and makes me do it a certain amount of times to where I've had a good number of experiences with it. It's also different from achievement hunting, which requires you to have more than a "good number of experiences" with it, such as 10k or millions.

If I am taking a break from that, then I either do dungeons to relax, help people clear extreme/savage fights that I know, spawn S ranks or conduct hunt trains.