What do we practice in yoga?

Observing the mind and guarding the outgoing tendency and impurities.

The untrained impure mind needs to be trained, disciplined and purified.
The pure mind doesn't need any training, or disciplinary, or purification.

Counter the negativity in the mind with positive thinking.
Positive thinking is needless when the mind is free from negativity.

Render the busy restless mind to be quiet.

Annihilate egoism - the idea of 'I', attachment, identification, desires of craving and aversion.

Live in the present.

Be in peace.

Be happy.