Find the money source
OM GAM GANAPATHAYE NAMAHA is a prosperity mantra and it can be used by all. If you do not know the source of money (for prosperity) then you can write this mantra many times.
For any drought-like life situations, to get good rains, to have sufficient water and a good house-garden, chant:
SURYA MANDALA VAASINI,
NITHYAM NAMAAM YA HAM