Idiom
I am afraid he is burning the candle at both ends and ruining his life.

becoming overgenerous
wasting his money
overtaxing his energies
losing his objectives

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Idiom
To cast pearls before a swine

To waste money over trifles
To spend recklessly
To spend a lot of money on the unkeep of domestic hogs
To offer a person a thing which he cannot appreciate

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