When you've finally acquired everything you wanted
and still feel a bottomless
chasm within your very soul and psyche,
it saps any motivation to want to 'better yourself'.

I could have my dream living in a mansion with a new escort every night and the best *******
and it would inevitably get old.

  The only way to achieve happiness is to give it all up.
Detach from the material world; immerse yourself in your  necessary domestic duties
and pet a cat, or any animal actually.
They have no fear of death
so consult
them