Al-Imam Ali (p.b.u.h), said:

Hadith n. 384

384. Amir al-mu’minin, peace be upon him, said: Leaning towards this world despite what you see of it, is folly, and lagging behind in good deeds when you are convinced of good reward for them is obvious loss, while trusting in every one before trying is weakness.

Hadith n. 385

385. Amir al-mu’minin, peace be upon him, said: It is (the proof of the) baseness of the world before Allah that He is disobeyed only herein and His favours cannot be achieved except by abandoning it.

Hadith n. 386

386. Amir al-mu’minin, peace be upon him, said: One who is in search of something will obtain it, or at least a part of it.

Hadith n. 387

387. Amir al-mu’minin, peace be upon him, said: That good is no good after which there is the Fire, and that hardship is no hardship after which there is Paradise. Every bliss other than Paradise is inferior and every calamity other than the Fire is comfort.

Hadith n. 388

388. Amir al-mu’minin, peace be upon him, said: Beware that destitution is a calamity, but worse than destitution is ailment of the body, while worse than bodily ailment is the disease of the heart. Beware that plenty of wealth is a blessing, but better than plenty of wealth is the health of the body, while still better than the health of the body is the chastity of heart.

Hadith n. 389

389. Amir al-mu’minin, peace be upon him, said: Whomever his action .detains behind, his lineage cannot put him forward. In another version it is thus: Whoever misses personal attainment cannot be benefited by his forefathers’ attainments.

Source: https://www.al-islam.org/nahjul-balagha-part-2-letters-and-sayings