From the Dhammapada, sayings of The Buddha:

160.
Your own self is your own mainstay, for who else could your mainstay be? With you yourself well-trained you obtain the mainstay hard to obtain.

166.
Don’t sacrifice your own welfare for that of another, no matter how great. Realizing your own true welfare, be intent on just that.

204.
Freedom from illness: the foremost good fortune. Contentment: the foremost wealth. Trust: the foremost kinship. Unbinding: the foremost ease.

207.
For, living with a fool, one grieves a long time. Painful is communion with fools, as with an enemy— always.

210.
Don’t ever—regardless— be conjoined with what’s dear or undear. It’s painful not to see what’s dear or to see what’s not.

244-245.
Life’s easy to live for someone unscrupulous, cunning as a crow, corrupt, back-biting, forward, & brash; but for someone who’s constantly scrupulous, cautious, observant, sincere, pure in his livelihood, clean in his pursuits, it’s hard.

328-330.
If you gain a mature companion— a fellow traveler, right-living, enlightened— overcoming all dangers go with him, gratified, mindful.

If you don’t gain a mature companion— a fellow traveler, right-living, enlightened— go alone like a king renouncing his kingdom, like the elephant in the Matanga wilds, his herd.