Depression may be based on a need for self-love, time, and contact with your inner self. There can be lack of love from partner, children, and family. Maybe a feeling of not being important and/or needed. Depression can cause some form of change/uncertainty. Depression can lead to personal growth because you often need to learn new strategies to escape it. Depression can and does provide some form of security. Depression can have a sedative effect because it prevents the affected person from making changes.