The Ramchal emphasizes the importance of self examination and awareness of how we are acting in the world. We are to monitor our service of Hashem as well as looking at improving on our interaction with the world.
He says that one who sincerely wishes to work on himself must start with having a very clear definition of הטוב האמיתי that he chooses to cleave to, and הרע האמיתי that he knows to distance himself from.
The טוב האמיתי, true goodness, must be defined as the principles outlined by the Torah and our sages. Anyone who believes there is any other system that is more just and compassionate than the Torah, possesses arrogance beyond belief.
The רע האמיתי, true evil, therefore, has to be what is contrary to Torah principles. This is the starting point that must be clearly defined as a prerequisite towards self awareness and self improvement.