The various ways in which forgetting, an inherent component of the human memory process, occurs are essential for understanding cognitive function and memory control. This paper investigates the main categories of forgetting, including retrieval failure, decay, interference, motivated or conscious forgetting, and encoding failures. Retrieval failure, which is frequently associated with the phenomenon of the tongue tipping over, happens when memories are present but momentarily unavailable. Information from before or after can interfere with memory retention. This interference can be either proactive or retroactive. According to the theory of decay, memories may deteriorate with time as a result of decreased brain activity or use. Suppression and repression are examples of motivated forgetting, which is the conscious or unconscious attempt to block out painful memories. Encoding failures happen when information is not sufficiently relevant or paid enough attention to go into long-term memory. This paper aims to clarify the intricacies of memory functions with respect to mind states that offer perspectives on possible approaches for improving teaching methods, treating memory-related illnesses, and reducing unintentional forgetfulness from the point of view of conscious, subconscious, and unconscious memory functions.