1.One should put forth some effort to prevent evil, and prevent unwholesome states of mind from arising.
2.One should put forth some effort to get rid of evil and unwholesome states of mind that are there (have arisen).
3.Put forth much effort to arouse good, and also wholesome states of mind.
4.Also put forth some effort to develop and bring to perfection the good and wholesome states of mind
already there (already arisen).
~ The Buddha