In The Enchiridion Epictetus gives the advice that in order to avoid suffering, we should not become too attached to particular things, so that when they inevitably end we are not caused undue harm. He starts with the fairly straightforward example of a cup that we like breaking:

With regard to whatever objects give you delight, are useful, or are deeply loved, remember to tell yourself of what general nature they are, beginning from the most insignificant things. If, for example, you are fond of a specific ceramic cup, remind yourself that it is only ceramic cups in general of which you are fond. Then, if it breaks, you will not be disturbed.

The then procedes immediately to what seems a quite more drastic example:

If you kiss your child, or your wife, say that you only kiss things which are human, and thus you will not be disturbed if either of them dies.

Some may find that living in such a way is strange, to say the least.