Your assignment is to be aware of the process.
Sometimes, very bad thoughts can come. Anger thinks its way – every thought is mean, never good; all are bad. For craving, everything is nice, beautiful and good. This is the nature of that mind. The unwholesome mind thinks its way.
That’s why we should not believe those thoughts. You’ll be shocked how the mind can think that way; how is that possible.
Anger thinks its way; craving thinks its way. (And ego thinks its way – how great and wonderful “I am”. Different defilements express their nature through different thoughts.)