What "you consider good" can be bad, especially if you are going by conscience and your source is faulty. Otherwise we would never learn from our mistakes or feel sorry for wrongdoings. A faulty conscience leads one to feel good for their wrongdoings, and to live by their mistakes.

If you do not go by conscience, but use your own observation and feeling, you must will thyself not to fall for the wrong moral nor to value the wrong ethic. One learns and grows more without conscience.

Conscience depends on the source of which you trust and believe. If you are the source, that is not conscience but regular sciens, also called sentience. If your sentience is true to nature you have no need of conscience, also called sapiens.