Mental, emotional, and behavioral symptoms of stress include decreased concentration and memory, indecisiveness, anxiety, depression, irritability, and changes in eating and sleeping. Common causes of stress include life events, daily hassles, unrealistic expectations, negative thinking, and conflicting beliefs with others. Beliefs can lead to stressful behaviors if they promote overwork, neglect of self-care, or inability to delegate responsibilities. Changing one's thinking, managing expectations, addressing situations causing stress, relaxation, social support, and professional help can all help reduce stress.