Is there a good resource that explains the DL's approach to achieving this in a more practical way? "Train your mind not to worry" is great advice but not easy

Is there a good resource that explains the DL's approach to achieving this in a more practical way? "Train your mind not to worry" is great advice but not easy to apply without more specific guidance. He hints that his approach is called "mind training" and is a Buddhist tradition. Is that another name for meditation or is it something else?