Multi-modal approaches to mental training (MT) involve the incorporation of more than one intervention method in attempts to enhance performance. Intervention amenability and compliance relative to multi-modal MT, as when using singular modalities alone, need to be seriously considered. Multi-modal MT can be very straightforward and designed to specifically address psychological or technical issues or goals independently. This chapter provides an example of a select individualized multi-modal intervention. As with all MT modalities, multi-modal methods must be documented and scrutinized for efficiency and efficacy. Heart rate variability (HRV) and autonomic nervous system (ANS) reports are used to determine intervention efficiency and efficacy. Multi-modal mental training (MMMT), as with any form of intervention that has established efficiency and efficacy, should be carried out independently by athletes who travel to competitions or are assisted by coaches and/or team mates in the absence of a sport psychology practitioner.