In case, you’ve struggled almost all your life, and still not being able to achieve your goals, then do this very very effective mantra: This is the first shloka of Argala Stotra. (a part of Durga Saptashati or Chandi Paath).
"Om Jayanti Mangala kali Bhadrakali Kapalini Durga Kshama Shiva dhatri swaha swadha namostute."
(Om. Conqueror of all, remover of darkness, Auspicious one, beyond time, bearer of the Skulls of Impure Thoughts, Reliever of difficulties, loving forgiveness, supporter of the Universe. You are the one who truly receives the sacrificial offerings and the offerings to the ancestors. To you I bow
Special Upaaya (Remedy):
If you are suffering from some ordinary disease (like allergy), and it is jus t not going away after so many treatments and medicines, then throw one day’s medicine in a drainage. And, buy the same medicine allover again. Buy the new medicine on Shuklapaksha’s fifth, 6th, 7th, or 8th or on Trayodashi