Swami Mukundananda
How do I start bhakti practice when my mind keeps wandering?
Begin by bringing God's form before the mind
Begin by bringing the form of Bhagwan before your mind, which gives the mind something to hold on to. Then imagine serving Him, and the mind becomes absorbed.
Once you bring His form before you, the mind gets a base to hold on to. Now think that you are placing flowers at the feet of your guru and Bhagwan, and fanning them.