The secret to both having and eating your cake is arbitrage. Trade your current cake for a greater size cake that someone will give you in the future. You’ll still get to eat it, just not right yet.
Make your wealth produce earnings for others, and you can both have and eat your cake. Figure out how to use your accumulated capital in the pursuit of other people’s happiness.
The more you can put off your own pleasure in favor of some one else’s, the more you will be desired, and therefore you will earn more.