Yes you base your mantras on the laws involved in the occult. For instance, the main source of strength for the astral body comes from the energy circulating throughout it, and there are parts of the astral body which receive energy. The R rune is connected to movement, A to energy, and M to reception. So for instance, RA-MA. The first syllable 'RA' could be used to strengthen the circulation of energy in the astral body and so it would be used on the entire astral body, and MA could be used on the parts that receive energy. And so, RAMA becomes a mantra or formula for remedying any problems with energy circulation and energy reception, and causes the energy received to be part of the energy in the energy circulation.
Interestingly, Rama is the name of an ancient Indian (Sanskrit) Deity, all of which are symbolism and allegories for occult processes, states, and techniques.
In other words, Mantra or Cabbalistic Formula construction has to do with using the letter or rune uses and their associations appropriately, i.e. in accordance with the laws involved in magic. However, there are different kinds of mantras which are not formulas and are rather more useful for their rhythmic character, and are simply to be repeated again and again, and these kinds are the ones one will mostly come across in meditation texts, especially of a Buddhist character.
Hail Satan, Inanna, and Thoth
