There is becoming more and more scientific evidence that consciousness is separate from the physical body, therefore when we die it is only our bodies that die.
The true essence of our being is spiritual, it is energy, and because of this our consciousness knows no boundaries. Energy is a vibration, filling the space around us, just like when you listen to music it comes from a source, but it is also all around you without limits or boundaries.
We are energetic beings living a physical life while here on Earth and our soul, our spirit, our consciousness, whatever you want to call it, continues to exist.
I am not here to convince anyone of the afterlife, there is existing scientific proof (the theory of biocentrism for example) available to those who require evidence-based material for confirmation of things they don't know or believe. However, this explanation of consciousness gives a greater understanding of occurrences like out of body experiences, near-death experiences, astral travelling, telepathic communication and even reincarnation, without lending itself to religious ideology.
My own belief is an extension from my experiences and that is our ability to communicate with the spirit world is very real. Through spiritual practices (meditation, channelling etc.) we are operating from the depths of our subconscious mind where anything and everything is possible. This part of the brain functions at a much deeper level and opens the gateway to endless information including the ability to communicate with the consciousness (the spirit) of our passed over loved ones. Even from a simple and natural state of relaxation and open mindedness communication can occur. From one consciousness to another, there are no boundaries.
When somebody dies others are left to mourn the loss with overwhelming pain and sadness. Memories are treasured, stories are told and tears are shed. Commonly, when people are grieving or missing their deceased loved ones they continue to talk to them for their own comfort. Meanwhile, on the 'other side', when people die they also want to reach out and offer peace of mind to those left behind. They want them to know they are ok and in a place of unconditional love and peace.
If people are afraid of spiritual contact or deny the possibility of connecting with the departed, they are likely to miss out on the reassurance their loved ones are trying to offer. Fortunately, people are becoming more open minded to the reality of divine communication and can sense the presence of spirit. When we need our loved ones the most, during times of hardship, suffering and grief, they are there. Death is not the final goodbye.