Three ways different ways of lucid dream

A lucid dream can begin in one of three ways:
• A dream-initiated lucid dream (DILD) starts as a normal dream, and the dreamer eventually concludes that he or she is dreaming.
• A wake-initiated lucid dream (WILD) occurs when the dreamer goes from a normal waking state directly into a dream state with no apparent lapse in consciousness.
• A mnemonic-initiated lucid dream (MILD) can happen when the dreamer intentionally affirms to himself or herself that he or she will become lucid during the upcoming sleep. Reaching lucidity can sometimes occur due to dream-signs or spontaneously upon remembrance.