“Mendicants, I do not see a single thing that gives rise to skillful qualities, or makes unskillful qualities decline like pursuing good habits and not bad habits.  When you pursue good habits and not bad habits, skillful qualities arise and unskillful qualities decline.”

Ref: AN. 1.71

“With a confident mind, recollect the Supreme Buddha who has immeasurable qualities. Always live with a body that is filled and spread with joy and rapture.

With a confident mind, recollect the Supreme Dhamma that has immeasurable qualities. Always live with a body that is filled and spread with joy and rapture.

With a confident mind, recollect the Supreme Saṅgha that has immeasurable qualities. Always live with a body that is filled and spread with joy and rapture.”

Ref: The Verses of Arahant Tekicchakāni, Theragāthā

“And what is that mirror of the teaching?

It’s when a noble disciple has experiential confidence in the Buddha … the teaching … the Saṅgha … And they have the ethical conduct loved by the noble ones … leading to immersion. This is that mirror of the teaching. A noble disciple who has this may declare of themselves: ‘I’ve finished with rebirth in hell, the animal realm, and the ghost realm. I’ve finished with all places of loss, bad places, the underworld. I am a stream-enterer! I’m not liable to be reborn in the underworld, and am bound for awakening.”

Ref: SN 55. 8. Paṭhamagiñjakāvasathasutta

“He who does not take the mind-and-body aggregate (nama-rupa) as “I and mine”, and who does not grieve over the dissolution (of mind and body) is, indeed, called a bhikkhu”.

-Dhammapada Verse 367

“Therefore, Dighavu, established upon these four factors of stream-entry, you should develop further six things that partake of true knowledge. Here, Dighavu, dwell contemplating impermanence in all formations, perceiving suffering in what is impermanent, perceiving nonself in what is suffering, perceiving abandonment, perceiving fading away, perceiving cessation. It is in such a way that you should train yourself.”

-SN 55.3 Dīghāvuupāsaka Sutta

“That well grown fig tree was full of green leaves. I meditated at the foot of that tree. There, mindfully I developed the perception of the recollection of the qualities of the Supreme Buddha.

“I practised that very same perception thirty-one eons ago. By using the same meditation, I was able to attain enlightenment.

-The verses were said by Arahant Sanbhita, Theragāthā

References:

https://suttafriends.org

https://suttacentral.net

tipitaka.net