I am not so much in stoicism nor in the self control of desire ... I am not so wise ...
In audio musical experience i simply discovered how creativity make us really happy without asking for any renunciation or ascetic self control ...
Acoustics knowledge ( + mechanical and electrical noise and vibration controls for sure ) can make a 1000 bucks system so good on all acoustic factors that we are able to pass what i called the minimal acoustical satisfaction threshold ...my actual system is not a stoic stop gap at all, it is completely satisfying even it it cannot be high end top or passed the maximal acoustical satisfaction threshold ...
my motto is :
Acoustics science rule the gear not the reverse ...
Then the secret of contentment is staying creative till your death and investing yourself creatively in what you have but which is used in the wrong way ... Learn how to use it in the optimal way ...
( As an example i modify thanks to Helmholtz knowledge the rear porthole of my speakers and the result is astonishing )
The secret of contentment is knowing how to enjoy what you have, and to be able to lose all desire for things beyond your reach.-- Lin Yutang