To all my critics, who are well-intentioned but painfully ignorant:
The tefilah for parnassah is found in almost every siddur. It is mentioned in the Yerushalmi Brachos, and is brought down by the Mishnah Brurah, OH 1, note 13. It is to be said EVERY DAY. This tefilah, as all others, has a dual intention. One, to ask for something from God, as we do in Shmoneh Esrai. Two is to acknowledge that all things come from God. He will decide whether to answer our prayers or not.
A segulah is not a prayer. It is not a tefilah. To call the tefilah for parnassah a segulah is misleading. Saying it today is no different than saying it yesterday or tomorrow. It may be nice to say it today if you need it, but then say it every day.