Yes it is simple to pick a stock and let it double but it can also half or quarter or go bust in a matter of just hours or days. Once had a stock that had doubled and split and doubled and split taken from the penny section and during a six month period should have sold it three or four time for massive gains but my faith in the company was so strong did not sell. The end results was the President and CEO of the company took the money and ran to south American leaving me with more than 20 million pieces of scrap paper so yes it is pretty simple.

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The only bad question on investing in the stock market is the one that is not asked.