All human being are subject to constant change, whether they are young or old, rich or poor, men or women, is immaterial. No one would be able to remain in same state for a long time. This changing fenomena is a universal truth and is beyond our control. We can only contemplate the body and mind to observe impersonality, as in reality both of them are not me and mine.
In the same way all other things such as property, wealth, possessions, family members, friends, relatives, beliefs, feelings, perceptions too have the same nature of impermanance. All of these belong to us in name but in reality these belong to nature only. So it is prudent that we avoide establishment of any clinging to these objects. There is no problem in possession and use of physical materials, attachment to these causes suffering.
Whenever a breathing body is born some one give it a name for identification, which only comprises five aggregates and conciousness.
Due to ignorance we view the body and mind belonging to one entity, whereas both of them are separate. whenever any object come into contact through our sense organs, our mind simultaneously eveluate it as good or bad, pleasant or unpleasant, favourable or unfavourable etc., and starts reaction as per the eveluation. According to this eveluation the process of craving for good/pleasant/favourable and aversion for bad/unpleasant/unfavourable come into existence.
The human mind is just like a monkey. It has a nature of jumping from one thought to another constantly. Most of these thoughts are unnecessary and useless. The mental thought process either keep it self engaged in the analysis and postmortem of past events or keep worrying for future outcome.
In fact there is nothing wrong with the way the body is. It is not the body that create suffering. It is our mental thought process, which is the root cause of all the suffering. It wishes to keep the body alongwith all the belongings permanently forever, which is impossible. Our body have a nature of constant change so wishing otherwise is only a sheer foolishness. It is, as such, better for us to see the way the things are and then let go of the clinging to them.
Meditation helps for the contemplation of the way it is and observe all the conditioned fenomena as a witness without any judgement whatsoever.