Sutra I.20 "sraddha virya smrti samadhiprajna purvakah itaresam"Patanjali.

With courage , vigour, confidence and by trusting  yourself , everything will be easier
In life it is hardly possible to achieve something without any great effort and commitment, and when you follow a spiritual way, like yoga, it is also necessary to take an attitude.
Yoga  allows you to see how the operation of the mind, allowing man to take responsibility for the construction of their own lives.
The qualities to live in depth, we must find the determination to make them fully own. The interior is perseverance conquest.