I did the same thing in Tron. I bought at 4 cents and watched it climb irrationally to 35 cents and for some reason held. It was mainly because Ripple was also going up well beyond any sane level at the time but yes greed got the better of me. I thought if Ripple could go up for no apparent reason, why not Tron too. Lesson learned. I still managed to sell at a profit since I got in so low though.