First, translation from Rohit Mehta
Practice denotes an effort for the purpose of being firmly established in a state free from all reactive tendencies. Practice has to be prolonged, uninterrupted and filled with earnestness or enthusiasm
And our poetic interpretation from Alberto Villoldo
Practice yoga and your single-mindedness will increase. Bending like a bamboo reed in the wind, you will become steadfast and grow roots that extend deep into the earth. Devote yourself to yoga. Watch your practice flourish.