Conscience and Buddhism
It's a good intention to desire to make a livelihood that does neither harm one self nor others, and conscience is very importand toward path and beyond.

As for how to use it all the way to highest liberation, best to get known the talk by the Sublime Buddha to his Son Ven. Rahula.

Mudita

[Note that this is not given for trade, exchange, stacks... but for liberation from it]