As stated by Zingie Zu and Ding Guo of the Chinese university of Sun Yat-Sen and Konstantinos Sentikidis and Tim Wildscat of the British university of Southampton, nostalgia helps in balancing and reducing of loneliness.
In the experiments took part workers of factories, students and children. The individuals that felt more solitary, reported that they simultaneously collected the smaller social support from their environment and were most nostalgic. When the researchers instigated nostalgia in certain volunteers, they felt henceforth that they enjoyed bigger social support from people around them.
Researchers explain that nostalgia strengthens the perception of individual for the amount of social support that he has and compensates the feelings of loneliness.
So if you feel lonely, try to be nostalgic and everything is going to be ok.
