Vijnana Bhairava Tantra
यथा तथा यत्र तत्र द्वादशान्ते मनः क्षिपेत् ॥ प्रतिक्षणम् क्षीणवृत्तेर्वैलक्षण्यं दिनैर्भवेत् ॥ ५१ ॥
By bringing the mind forcibly to dwadashanta again and again, however and wherever possible, the fluctuations of the mind diminish day by day, so that each moment becomes an extraordinary state.
english translation