This happened on the early January of this year 2018. At that time, i was very happy when i checked my portfolio, well i assumed that i am not the only one happy that time as many traders are having a mutual feeling as mine because of their gains. My portfolio was already having around 10,000 US dollars because of PAC Coin, i couldn't remember anymore how much I've invested that time. I was thinking already on buying a house, new gadgets etc., then greed came into me. I didn't want to liquidate the money as i was expecting that it will be around 20,000 US dollars in a few days, but i was wrong, as how fast the price came up, that's also how the price went down. I regret it, but i already moved on and i learned from it a lot. So the next time i'll be having that once in a lifetime opportunity again, i'll be grabbing it right away. So guys, if you already have that same opportunity, grab it right away, don't be controlled by greed.