Sincere Advice from Ali Ibn Abu Talib (A.S.) on this world.

Extracts from Nahjul Balagha Sermon 173:

Know that this world
which you have started to covet and in which you are interested,
and which sometimes enrages you
and sometimes pleases you
is not your (permanent) abode,
nor the place of your stay
for which you might have been created,
nor one to which you have been invited.
Know that it will not last for you nor will you live along with it.
If anything out of this world deceives you (into attraction), its evils warn you too.
You should give up (the objects of) its deceits
in favour of (the objects of) its warning
and (the objects of) its attractions in favour of (the objects of) its terrors.
And while here in it, advance towards that house to which you have been called,
and turn away your hearts from the world.

(al-islam.org/nahjul-balagha-part-1-sermons/sermon-173-prophet-s-trustee-allahs-revelation%E2%80%A6)