I understand what you're saying, but we should remember that (for example) Germans who helped murder Jews, gypsies, homosexuals and mentally retarded people also had “warm fuzzy feelings” fostered by a daily, unrelenting diet of government-sanctioned “information” and social approval that convinced them that they were doing “the right thing” to help others and make the Third Reich strong.

Vague “feelings” are comforting, but they can easily mislead. Study of moral literature (especially the Bible), unremitting introspection, and constant questioning of one's motives are ways to strengthen one's sense of ethics.