When one is 'Tiring-Out', it is not just an adage of "old age". It is also, potentially, a transcendent act. When one relinquishes their interests to the past, to 'the world', when their 'interests' wane from 'Intellectuality' (on a literal higher plane of conceptuality), like shorelines' receding waters from the sands, what one is left with is- barring restrictions to this action- is a blissful/contented contemplative reset of values (slowly but surely) [or consider "compression" versus "decompression" -- in otherwords, the "decompression" people usually endear to, to earthly attachments and bonds, which ultimately lead to strife and/or at the very least, a need for contemplation- hence the telos of this action].
This reset of values is seen on the conceptual higher plane, aforementioned. The attachments of old release themselves, as what is usually seen, as 'Compassions'; but also can orient in differing ways, from object-oriented contemplation (Zen type practices, as such), and other ontological persistence; as we remain in the world, in otherwords, we persist in action on this realm of existence, but also contemplate [not on the higher plane but...] IN the higher plane, when relinquishing those "bonds", which we are so apt to hold to as facts, when they are merely holes to be leapt out of.
In the end, with this transcendence that is, the world of the ego, identity, and bonds, are abjured for a more functional understanding of the emotional and secular world.
This can be achieved earlier in life, but only with age can you be endowed with it- so it must be endeavored upon, either way. Only then can you see it; otherwise, you are left with the bonds of this plain and our aptness to see the world as Iconic and more real than the Consciousness that precedes it. Then the contemplative factors of ultimate realization cease to exist, and only the release of bonds UNTO THE ICONIC, ie, the 'exterior reality' of existence remain (leading to decline into nihilism, as per our own common History of the 20th century among most, if not all, first-world countries- even Germany eventually...).