Thank you for the opportunity to post an anti-segulah rant.
I don’t know whether segulahs work or not. I do know that as I understand them they are not part of how I understand Judaism. Judaism is the worship of G-d and the fulfilling of his command. We are commanded 613 things.
We believe that G-d always does what is best for a person. By doing what we are supposed to, we ensure that in the next world we will be rewarded. What happens in this world is not guaranteed.
Learning Shir Hashirim is a mitzva. So is learning perek shira and saying “amen”. And so is learning the 17th perek of Iyov.
The Torah gives us guidelines on how to decide which mitzvos should be performed at which times. We are supposed to follow these guidelines as the ratzon Hashem. The only deciding factor in any decision should be what is ratzon Hashem.
Some people imagine that by performing certain mitzvos in certain orders (sometimes not even mitzvos), they will “force G-d” to act in a certain way. I know of no basis to believe such a thing; but, even if it were true, is it a good idea? G-d does what is best for a person, by “forcing him”, you may get what is bad for you.
This is not the same as davening. We are commanded to ask G-d for our needs and G-d responds with what is good for us. Sometimes the asking changes what is good for us. But can anyone believe that if a person does what G-d wants, asks for his needs, but neglects to recite Shir Hashirim for 40 days, he will not get what he deserves?
Just what type of G-d do you believe in?