You just do it automatically.

你只是会很自动地去做。

Next time you just do it in Canberra.

下一次，这种事你放在堪培拉做吧！

You just do it. You may smoke when you are stressed.

也许你甚至没想过要吸烟，但你的确那样做了：压力大的时候，或许是在喝咖啡的时候，你会不由自主的开始吸烟。

In situations like this the pressure is minimal. If you'd rather read the paper than chat then you just do it and don't worry about it.

在这种情况下压力是最小的。如果你更想看报纸而不是聊天的话，你就可以这么做，不用担心什么。