Pilot 2 Primary aim: To explore the feasibility of using the MOST approach to optimize energy balance interventions in a sample of BRCA (BReast CAncer) positive and Lynch Syndrome positive individuals and their family members. To address this aim, investigators will record and assess study and intervention implementation, participant adherence to intervention component requirements, and satisfaction with intervention approach and specific intervention components. Feasibility of individual components and the overall intervention will be determined as described in the protocol.