Cattāri Brahmavihārā

162. There are these four perfect efforts. What four? Concerning this, one generates desire to prevent the arising of evil unprofitable states that have not yet arisen. One makes an effort, sets going energy, lays hold of and exerts the mind to this end.
One generates desire for the abandoning of evil unprofitable states that have already arisen. One makes an effort, sets going energy, lays hold of and exerts the mind to this end.
One generates desire for the arising of profitable states that have not yet arisen. One makes an effort, sets going energy, lays hold of and exerts the mind to this end.
And one generates desire for the persisting, the non-confusion, the further development, the increase, cultivation and fulfilment of profitable states that have already arisen. One makes an effort, sets going energy, lays hold of and exerts the mind to this end.

Digha Nikaya II.313

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