An ownership mentality is doing acts of creation to improve a thing that no one asked you to do.

To be an owner you need to assume the thing is your responsibility for a medium to long term, and also to have the space to act like an owner.

Acting like an owner requires practice. If you don't have practice, it will get harder to do it in other domains, too.

There's a healthy "I'm going to act like an owner and ignore minor process that is holding me back because I know what's in the best long-term interest of the thing" that looks superficially similar to a "I'm going to ignore minor process that is holding me back because I need to get this done fast so shortcuts are the only way".

The former is healthy; the latter is reckless.

When you're doing work, the former and the latter will feel very similar, so be careful!