Cheat mode - Go to "Buy Perks" screen located at the Info menu. Then, hold L + R + Square. A "Cheat" perk should appear with a free Woo-Hoo icon. Buy it to receive money boost, some skills, clear your needs, and fill your Sanity.

Easy money - Improve your Creativity and start selling your own paintings. This will give you 500 Simoleons for each painting.