Depression is a mental health disorder that affects how you feel, think, and function. While occasional sadness is normal, depression can make daily tasks challenging and diminish the joy from activities you once loved. Symptoms can vary but may include persistent sadness, anxiety, agitation, sleep disturbances, hopelessness, changes in appetite, or trouble concentrating. In some cases, it may lead to thoughts of death or suicide. If you're struggling, remember you're not alone—a qualified mental health therapist can help.