I like food. Food is a gift from the Lord...yet food cannot make me holy. If I eat only organic food, or eat only kosher food, or eat only local food, I won't be one bit more holy than if I eat a bacon cheeseburger at McDonald's. I may be more healthy, but I won't be more holy. Yet there are people who make following such rules a major part of their morality.
People follow other strange teachings. I met a lady who thought that the best way to understand the Bible was to read it backward: start at the back; read the last page, then the previous page, and so on. There are people who think you cannot worship properly without an organ. There are people who think you cannot worship properly with an organ. There are people who think the essence of Christianity is taking lots of airplane trips to distant places to tell people that they should conserve energy. I met two young men who seemed to think they were more holy because they read only a "good cleaned-out King James Bible" with no notes. There are people who think they should do "temple work" to save their ancestors.
All of these are missing the point: Holiness is in the Lord. He can make us holy; we can sanctify ourselves (set ourselves apart as holy) to him. All of the strange teachings and rules of men won't make us any more holy. They will only make us odd and enslave us.
Are you holy? If so, how? By following strange teachings? Or by the grace of the Lord Jesus Christ?