Nostalgia is the thoughtful and emotional feelings you have when you remember an important event, relationship, place, and other elements of the past. It is when something that occurred in the past affects your emotions or decisions. It results in good sentiments, purposeful feelings, better social life, and positive thinking in most cases. However, it can also result in several negative emotions .
You can feel unhappy with your present situation by yearning for the past (something you can’t accept). Nostalgic depression is a feeling with a deeper sense of hopelessness or sadness. Nostalgic depression is not considered a special type of depression. It reduces when you focus on happy memories from your past to boost your mood and live in the moment.