Mantra, Japa, Homa, Gems, Visiting temples, colour therapy, are various methodology adopted as remedial measures.
If one believes that pariharas are something that help in achieving their desires then I have nothing to contest their belief. However sharing the true experience of people is essential and one needs to surrender to the macrocosmos while following the parihara and not just into a regular mundane activitiy with an intention that 1+1 will make it 2.