1\3rd of Gan Eden
Q: What is the source that if one sets up 3 couples and they get married one goes to Gan Eden?
A: There is no source. But it is certainly a great Mitzvah and one should exert great effort for it (and Ha-Rav Chaim Kanievski said: I have not heard. Segulot Raboteinu p. 230).
Corner of a Table
Q: Is it true that if one sits on the corner of a table he will not get married?
A: There is no such thing (And so too Ha-Rav Chaim Kanievski. Segulot Raboteinu p. 223. Shut Ve-Darashta Ve-Chakarta Vol. 5 Even Ha-Ezer #22).
Q: Is healing – treatment for physical and emotional illness by transferring energy – in the spirit of Torah?
A: From a scientific perspective it is nonsense, from the halachic prespective it is therefore superstition (Ner Be-Ishon Laila p. 120).