Yoga is very difficult of achievement. Even after making strenuous efforts, you are not able to master it. And so you fail to realise God.
I am, therefore, telling you the secret of my heart. It is not necessary for you either to control the mind or to subdue the senses. Instead only do this: wheresoever your mind goes astray, imagine your Sadguru’s feet to be there. Knowledge of Brahman will then dawn on you.
Jnaneshwara says, endeavour to become Nirguna, and you will come to know fully the secret of the knowledge of Self.
Shri Jnaneshwara (Incarnation of Shri Kartikeya), Abhangas