How do you tell the difference between people who want to exploit your ability and the people who generally want to help you? There are definitely points where their incentives are aligned and their advice would overlap.
See The Bible, or frankly any other religious/political text.
P.S Not to take away the fact that those texts are legitimately interesting and valuable in their own rights. But they are by dead people propagated as instruments by the living.
As a particularist, I would avoid following general principles of conduct in every case, since these do not work in the generality they claim. While I might prefer to use art, literature and religion as a guide to some aspects of conduct in particular cases, I would avoid following to the letter any express or implied general principles of conduct they might contain. With respect to your article, as far as religious texts go, there is Ecclesiastes 9:11.