Musar zu Tehillim 37:32

And it is obvious that even if one is watchful over himself, it is not within his power to save himself without the help of the holy One blessed be He. For the evil inclination is enormously powerful as scripture says: "the wicked watches the righteous, and seeks to slay him, G-d will not forsake him to his power" (Ps. 37:32).

The second: on the actions which he does, to determine if they are in the category of the good or the evil.

This applies both to times when he is in the act of doing and when not in the act of doing.