Gemini Marilyn Monroe isn't just a movie icon still famous fifty years after her death. In true Gemini fashion, she struggled with mental illness throughout her lifetime.
Your sign has many aspects that can be managed, of course. A little crazy just makes you that much more fascinating.
But for Marilyn, pills and alcohol led to numerous suicide attempts and finally her death. At the heart of this is Gemini's strong mental side, which needs constant stimulation through your lifetime.
If you're not careful, this can lead to insecurity and paranoia. Take a page from the most famous screen goddess ever, and stay healthy.