1: As soon as you wake up, go to the bar, go to the back and play blackjack.

2: Go all in.

3: If you lose, immediately back out to the main menu and then click continue, you'll start back in your bed with all your money.

4: If you win, go back to bed to save the game, or continue on with your day with double the money you started with. Repeat as many times as you'd like.