Bhagavad Gita 12.9अथ चित्तं समाधातुं न शक्नोषि मयि स्थिरम्।अभ्यासयोगेन ततो मामिच्छाप्तुं धनञ्जय ॥

Abhyasa Yoga Abhyasa is constant practice to steady the mind and fix it on one point the practice of repeatedly withdrawing the mind from all sorts of sensual objects and fixing it again and again on one particular object or the Self. The constant effort to separate or detach oneself from the illusory five sheaths and identify oneself with the Atman is also Abhyasa. If you are not able to fix your mind and intellect wholly on the Lord all the time, then do it for some time at least. If your mind wanders much, try to fix it on the Lord through the continous practice of remembrance. Resort to the worship of the images of God, feeling His Living Presence in them. This will also help you.Why did Lord Krishna address Arjuna by the name Dhananjaya here Surely there is some significance. Arjuna conered many people and brought immense wealth for the Rajasuya Yajna performed by Yudhishthira. For such a man of great powers and splendour, it is not difficult to conquer this mind, and obtain the spiritual wealth of knowledge of the Self. This is what Lord Krishna meant when He addressed Arjuna by the name Dhananjaya.