The answer is: Daoism and Zen Buddhism
Buddhism itself is popular all over the world for its meditation practices and importance on self-control and living without worldly distractions.
In fact, Buddhism talks about achieving Nirvana, a sort of an inner peace, where no worldly temptation impacts the person who achieves it and they can live alone, without external forces or relationships.
Nirvana requires deep silence and meditation for years and is seen as a way to come close to God and move away from the world.