As you check a box, you are doing something, and that sense of doing something slowly removes that sensation that you don't want to do anything, and that's because you are already doing something.
每當你打一個勾,你就是正在做事情,而那種有做事的感覺會慢慢消除你完全不想做事的心情,因為你已經在做點什麼了。