Hello... Yes! Depression is a very common mental illness in which the patient has a low mood low energy, and no interest in activities that he used to do earlier. Patients also don't sleep well and their food intake also reduces., Sometimes they may feel as if the future is hopeless. Patients occasionally have suicidal ideation also.. but fortunately, it is a very easily treatable condition with drastic improvements in mood and other symptoms with medications. sometimes patients may be suggested therapy with medications also. Contrary to popular belief it is not a weakness of personality. Please don't ignore the pain of anyone going through this. Seek help immediately.