Energy Balance Interventions in Increasing Physical Activity in Breast Cancer Gene Positive Patients, Lynch Syndrome-Positive Patients, CLL Survivors or High-Risk Family Members

Inclusion Criteria: * PILOTS I, II AND III: Body mass index (BMI) of 25 or higher OR \< 150 minutes of moderate to vigorous exercise per week OR \< 5 servings of fruit and vegetables per day * PILOTS I, II AND III: Capable of participating in moderate-vigorous unsupervised exercise * PILOTS I, II AND III: Have a cellular telephone and are able and willing to send and receive text messages * PILOTS I, II AND III: Able to read and write English * PILOTS I, II AND III: Have access to internet * PILOT II: BRCA positive OR Lynch syndrome positive individuals * PILOT II (FAMILY MEMBER): Female and male biological and non-biological family members of BRCA-positive individuals OR Lynch syndrome positive individuals * PILOT III: CLL survivors * PILOT III: Has experienced fatigue within the past seven days Exclusion Criteria: * PILOTS I, II AND III: Unable to walk without crutches, walker, cane, or other assistive device * PILOTS I, II AND III: Women who are pregnant (by self-report) * PILOTS I, II AND III: Less than 3 months post-surgery * PILOTS II and III: Currently receiving radiation therapy or cytotoxic chemotherapy