What is Yoga?
In The Bhagavad Gita, Krishna defines yoga in many ways, but fundamentally Yoga means “Union”. It is the union of all that you believe to be seperate, with the Self. The Self is that witnessing part of you that is undisturbed by the external world, and guides us through our intuition. It is the part of you that is connected to the Universe/Higher Power/God (whatever you want to call it). You may also think of it as the Soul. Yoga is a path for you to connect with your Self and realise your true potential.
“The word ‘Yoga’ means ‘union.’ Union means you begin to experience the universality of who you are. For example, today, modern science proves to you beyond any doubt that the whole existence is just one energy manifesting itself in various forms. If this scientific fact becomes a living reality for you – that you begin to experience everything as one – then you are in Yoga. When you are in Yoga, you experience everything as a part of yourself. That is liberation, that is mukti, that is ultimate freedom.” -Sadhguru
The Bhagavad Gita
On this path effort never goes to waste, and there is no failure. Even a little effort toward spiritual awareness will protect you from the greatest fear. (2:40)
Having found the source of joy and fulfilment, they no longer seek happiness from the external world. They have nothing to gain or lose by any action; neither people nor things can affect their security.
The Bhagavad Gita (3:17-18)