Too much talking is an obstacle in yoga.
We are all divine! But divinity is not to be achieved, it has to be re-discovered. An obstacle to divinity is lack of awareness.
The cause of happiness or suffering is brought about by the function of the mind. Yoga will help channelize the function of the mind. Pranayama helps control the mind.
Practice with awareness. Sincerity in practice. Any art or science in life needs sincerity in practice.