Usually people consider Shani as a Villian in Astrology. They thinks that Shani will never allow us to shine and he will make our life hell. So they thinks to get out of negative effects of Shani Mahadasha.

One should not be confused between Shani Mahadasha and Sade Sati which is the 7.5 years period when Saturn cross our Moon sign, previous Rasi and the Next Rasi. Sade Sati is mostly a bad period, but Shani Mahadasha is not bad for all. It may be bad or good based on Lagna and Saturn's placement.

For Taurus and Libra Ascendants, Saturn become a most benefic planet as it was a yoga karaka planet and will give beneficial results only during Saturn Mahadasha if well placed in a Kendra or Trikona. Even though weak and ill placed, Saturn will not do negative things for the above mentioned ascendants.

Another notable period of Saturn is Ashtama Shani which happens when Saturn comes to 8th house from Moon Sign. Ashtama Shani will gives too much of obstracles and struggles in our life regardless of benefic and malefic nature based on ascendant. He will give negative results even for his favourite peoples.

When one goes in a wrong path, he become a god of punishment. When one goes in a right path, he become the god of appreciation. Generally, he is god of justice. He never accepts any bribe from people. But It is believed that mantras and poojas would give a relief in negative Saturn period. The truth is as we trust it strongly, it could boost our confidence.