Mental health refers to emotional, psychological, and social well-being that allows individuals to realize their full potential and cope with life's stresses. Positive mental health includes connecting with others, getting enough sleep, staying physically active, seeking help when needed, developing coping skills, and helping others. Mental health issues can stem from biological factors like genetics, life experiences such as trauma or loss, and family history of mental illness. Common mental illnesses are anxiety, bipolar disorder, schizophrenia, and dementia, which involve changes in thinking, mood, behavior, and perception of reality.