Just saw an interview with author Fredrick Forsyth on the BBC (he was an employee of the Beeb in an earlier Avatar) program Hard Talk. Among other things he talked about how he lost a fortune making a bad investment and was driven to penury by his wrong decision. I just loved Day of the Jackal and Odessa File and his style of writing which combined a vast knowledge of the underworld and the working of twisted minds.
If it can happy to this talented writer it can happen to everyone. He also talked about how he had to work his ass off writing five novels in five years to make his fortune back.
We, writers especially, are careless with our money to be sure. Do be careful with your money.