I will say I am 100% guilty of this and it has affected me greatly. I find it difficult taking profits or selling my coin even if its pumping really hard. My worst mistake was with HYDRO and I have lived with it ever since. The most recent was AERGO and Atomic Wallet Coin. I had the opportunity of selling at the top but I didn't and now both have dumped massively. I will have to learn how to overcome this flaw pretty soon.