For instance, there may be feelings of worthlessness, loneliness, panic, anger, guilt, rejection, self-hatred or confused sexuality.

CNN: Self-injury/cutting

When they are depressed however they feel low, are often tired and might have sleep problems, feelings of worthlessness and guilt.

BBC: NEWS | Health | Call for mental disorder checks

Her family said there was nothing to suggest she was unhappy, but a police investigation of her computer revealed she suffered "misplaced" and "unfathomable" feelings of low self-esteem and worthlessness, the inquest was told.

BBC: Teenager Isobel Narayan bought suicide drugs online