1) Where there is joy there is creation. Where there is no joy there is no creation: know the nature of joy.

2)Know the self to be sitting in the chariot, the body to be the chariot, the intellect the charioteer, and the mind the reins.

3)Whenever the wavering and unsteadfast heart wanders away, then so often let him subdue it and bring it back to the control of the soul; For supreme happiness comes to the Yogin whose heart is at rest, in whom passion is tranquilised, who is one with Brahma, and free from sin. The Yogin thus uniting his soul (to Brahma), who has ceased from sin, enjoys easily the boundless happiness of union (lit. contact) with Brahma.
Bhagavad Gita 6:26-29

4)He who hates no single being, is friendly and compassionate, free from self-regard and vanity, the same in good and evil, patient; Contented, ever devout, subdued in soul, firm in purpose, fixed on Me in heart and mind, and who worships Me, is dear to Me.
Bhagavad Gita 12:13-14

5) He that does everything for Me, whose supreme object I am, who worships Me, being free from attachment and without hatred to any creature, this man, Arjuna!, comes to Me.
Bhagavad Gita 11:55

6)Perseverance in (seeking to gain) the knowledge of the Supreme Spirit, and perception of the gain that comes from knowledge of the truth: This is called knowledge : all that is contrary to this is ignorance.

7)"The wise who knows the Self as bodiless within the bodies, as unchanging among changing things, as great and omnipresent, does never grieve". "That self cannot be gained by the Veda, nor by understanding, nor by much learning. He whom the Self chooses, by him the Self can be gained. The Self chooses him (his body) as his own". But he who has not first turned away from his wickedness, who is not tranquil, and subdued, or whose mind is not at rest, he can never obtain the Self (even) by knowledge.
Katha Upanishad 1.2.22-24