Supportive Psychoeducational Intervention for Patients With Brain Tumors (Acceptance and Commitment Therapy-based Supportive Intervention for Patients With Central Nervous System Tumors)

Inclusion Criteria: * Age ≥ 18 * Massachusetts General Hospital Cancer Center Patient * Diagnosed with a malignant primary Central Nervous System (CNS) tumor * English speakingLanguage Exclusion Criteria: * Inability to provide informed consent as assessed by the study team (e.g., due to severe cognitive impairment/dementia) * Moderate to severe receptive aphasia (Quick Aphasia Battery sentence comprehension subscale < 8) * Deemed by treating team to have less than 6 month life expectancy, including patients with current or imminent hospice enrollment * Current participant in the NeuroTransitions (23-574) or NeuroPathways (23-178) studies at Massachusetts General Hospital * Diagnosis of Primary CNS Lymphoma