What is homesickness?
The symptoms seem to be a wistful longing for a place or situation that once existed. In extreme cases, depression can result that in turn leads to more focus on the perceived loss of place and relationship(s). Treating the symptoms may provide some temporary relief, but it's better, in my opinion to tackle the problem head on.
What is most fundamental about 'home sickness'? It is the attachment to a perceived past, and what is currently beyond the grasp of the individual. Let go of the past, and the problem no longer exists. Easier said than done.
Why is it that people are reluctant to let go of the past? We know in our bones that the past is gone and can not be called back. The present moment is fleeting, a bead sliding down a taut string leaving the past behind and never quite reaching the future. We are caught eternally between two abstractions, the past and the future. Only the moment exists, and even it has no more dimension that a mathematical zero. That's not a comfortable realization for most folks, and is even counter-intuitive for many.
"I remember!" "I'll avoid being burned if ...." These two poles, remembered past and anticipated future are the basis for living in the world. We learn from the past, and our thoughts, words and action affect what we will experience as the present somewhere 'down the line". Our present is thus a mixture of three elements: The remembered perception of the past, an anticipated future moment(s), and an appreciation of the moment as it is unrelated to either past or future.
Lets see if we can better understand the hold that the past has on each of us. The past is our schoolroom, and our perception of history (both personal and collectively) is the raw materials from which we make decisions in the hope of creating for ourselves a future that has less suffering and more happiness than our memory of the vanished past. When a child burns its fingers on an open flame, a lesson is learned that touching fire can hurt and hurt/suffering should be avoided if possible. We study the successes and failures of our past seeking to unlock the key to a future with less suffering in it.
But just how reliable is memory, how "truthful" history? The answer of course is that our own memories are often false. We subconsciously alter what we remember to accentuate some elements of by-gone moments, and de-emphasize others. We "forget" what doesn't fit into our view of what our past actually was. We want to remember a loving, caring family, and so we block out what doesn't fit into that picture. The failings and faults of our parents are overlooked. Abused children rescued from extremely abusive households, often believe that they are loved and cared for, and are carried screaming away from little hells. Thankfully, most children do have a reasonably nurturing family life. BTW, the opposit side of the coin is that some later become convinced that they were abused as children, even though that pretty often is later determined to be a false memory.
So, we paint a golden aura around that period in our lives where we were cared for, nurtured, and catered to. We paint over the knocks and scrapes of adolescence, and remember the joys of having a "best friend" and the excitement of discovering the large world around us. Our "forever" childhood slips away so quickly that we hardly notice its gone, and then we yearn for it to exist again purged of the problems we've tucked away in the closet of our minds.
There is a second reason that we become almost obscessed with the past, and that is our anxiety about the future. If our perception of the past is wonderful, then anything less in the future will carry great risk of disappointment and suffering. On the other hand if our recollection of the past is filled with pain and suffering, our anticipation of a worse future can be almost paralzying. These are emotional responses to our preceptions, but then we humans are far more likely to tailor our lives according to emotion than reason.
The effect of both of the reasons outlined above is to disturb the balance between memory, anticipation, and appreciation of the moment, the only "real" thing that exists for us. Only when we release our attachment to our perception of the past, and our concerns with controlling the future, can we hope to more fully appreciate our present moments.
Cliffs: Let go of the past, and focus on your present circumstances. Learn from your past, using what youve learned to mitigate the suffering that you, and those around you, will encounter each day. Focus on each moment as fully as you can. Smell the roses, savor the taste of honey. Make each of your mundane daily chores into a meditation on full consciousness, and the product of your labor will improve in quantity, quality, and the satisfaction you derive from the effort. Don't try to save the world from itself, but discipline yourself to think and reason along compassionate lines. Avoid hurting others by careless speech, or spiteful actions, afterall there's already enough suffering in the world withour our addition to the total. Be open to the moment and you will see and experience more than you would have believed possible. Appreciate what you have in each of these vanishing moments, and your memories of the near past will overwhelm those more distant that have been more fully edited by your mind. The attention you pay to each moment now will shift the anticipation of the near future from "dark" to "light", and so you will be less anxious and afraid. Being less anxious and afraid, your thoughts, words and deeds will be less provocative of those perceptions that lead inevitably to greater suffering. Tend to your garden as it is in each moment of your waking, and you will be rewarded with a rich harvest. Dwell on some lost Golden Age, and both your present and future will be dimenished and filled with suffering.