True, Sani teaches one, valuable lessons during his period.
But Sani is one of the most misinterpreted planets.
Sani is the karaka/signifactor for prana, discipline, service, humility and patience.
The one who is aware of one's prana, one who is disciplined, humble and who is prepared to wait always gets the benefic looks of saturn.
Rahu is Sani's agent and mostly bring about Sani's results.
People born in certain ascendants or moon signs or sun signs, lack the above saturnian qualities by some percentage and hence are subjected to severe test by saturn.
The best remedy being development of the before said qualities.
The moola mantra for Sani is Om Praam Preem Proum Sa Saneescharaya namaha.
Sani likes yoga and regulation of breath or Pranayama.
Sani likes no show off.
Sani's stone is indra neela or blue sapphire
Sani's grain is sesame.
For certain lagnas or ascendants sani is very beneficial.
Like for Taurus/rishabha, Libra/thula and capricorn/Makara ascendants, if he is posited in positive houses.
Another dreaded period is 7 1/2 saturn and also kantaka sani.
when saturn transits 12th, 1st and 2nd houses from moon sign, it is called 7 1/2 saturn period.
And when in 1, 4, 7, 10 positions it is kantaka sani. Remember: The one who is aware of one's prana, one who is disciplined, humble and who is prepared to wait always gets the benefic looks of saturn.