During the early Greek times, nostalgia was treated as a mental condition primarily based on extreme homesickness. In modern times, however, nostalgia is treated as a separate emotion. Nostalgia is often associated with positive feelings, often associated with positive memories of the past. The feeling of nostalgia often helps improve the mood of the person who is experiencing nostalgia. It also makes the person feel more connected to society. It can make the person feel more aware about living life to the best. Nostalgia is also shown to help reinforce memories, as well as assist with learning.