If you make a change out of a sense of moral obligation ("conscience", as you put it), that's applaudable. Moral obligation can also be a good hook to appeal to

If you make a change out of a sense of moral obligation ("conscience", as you put it), that's applaudable. Moral obligation can also be a good hook to appeal to people to change their habits. However, one person's behavior has no impact. It does not "make a difference". When you say that you're "trying to make a difference", that doesn't make sense to me, because there's no plausible mechanism by which you could achieve that difference.