Alma 20

False traditions can be perpetuated from generation to generation, like the false belief that the Nephite people had cheated the Lamanite people in some beginning:

13 And now when Lamoni had rehearsed unto him all these things, behold, to his astonishment, his father was angry with him, and said: Lamoni, thou art going to deliver these Nephites, who are sons of a liar. Behold, he robbed our fathers; and now his children are also come amongst us that they may, by their cunning and their lyings, deceive us, that they again may rob us of our property.

This tradition has its roots in the time when the Lord told Nephi to flee from the land first settled by his family because his brothers, Laman and Lemuel, were going to try to kill him. The Lord instructed Nephi to take with him the plates of brass and the Liahona and the sword of Laban, and perhaps other things. This is the "robbery" referred to by Lamoni's father. Laman and Lemuel had always taught their children that this was the case. 

False traditions will be perpetuated from generation to generation unless we make it not so. Each one of us has learned beliefs, habits, or traditions that are not correct because we come from imperfect parents. It is our duty to root those things out of our lives so that they don't get passed on to the next generation. Do you want your children or your close friends to pick up your bad habits so that those bad habits can plague them all their lives too? No. So you have to get them  out of your life.