Ashtang yoga
Ashtang yoga has 8 parts. It is meant for purification of mind.
These are certain things that help to purify but it is a long process. One has to try again and again.
But though you have not reached complete purification,the process also gives us happiness
The 8 angas are [of yoga]- yam niyam asan pranayam pratyahar dhyan dharana samadhi
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