<prompt> Human: I was an early investor in a new cryptocurrency called Ethereum see rEthereum for more details and my initial investment of 500 is now worth 12,000. This growth occurred over a period of about a year. Im pretty blown away and excited about this return. I feel there is a good chance it will continue to grow though Im realistic that I cant expect it to grow at that same rate forever - but Im also wary of keeping money in a volatile investment and possibly losing it.So - should I sell now and be happy with my good fortune, or hold out for more? What factors should I consider in making this decision? Selling now would help me reach a savings goal that I have much more quickly, but obviously the more I can squeeze out of this investment the better.  <response>: My philosophy is to never have more than 10 of my assets in speculative investments. I made a 1,000 investment in bitcoin which turned into over 50,000, and I completely liquidated my position in 2014. Dont make the gamblers fallacy. You got lucky. Sell the 11,500 and let your initial investment ride if you want. This 12k can be a jump start to paying down debt or investing. 