I also made mistake sell based on feelings but from that I learn how to be patience and how to do not panic when bitcoin price goes down, I should believe if the price goes down just temporary and bitcoin price will increase again..
We all made a mistakes but the good thing is we learn from it and chances are we can still do better. We trade with zero knowledge, invest without studying and so on but hey keep on learning because in this kind of market mistakes can brings you so much loss so better no to waste this great opportunity to make money.
as it is today the price is in low position. be patient, because bitcoin will surely pump in the end
I think emotion is the reason why we do again the same mistakes and lock of trust, if you really believe in bitcoin you know that you don't need to worry of what's happening now because we know at the end bitcoin will recover.
Its unfortunate because the most important is your wallet keys/password. Luckily I didn’t have an experienced like those listed. Only mistake I made so far in bitcoin is when I joined a bounty campaign and wasted my effort and time because I wasn’t able to follow the rules and guidelines of the bounty. That made me very disappointed because after the bounty campaignwas finished I didn’t get any token. But I learned from it so now I know what to do.
I've definitely fallen for it once or twice. Always tends to be okay in the long run though. Number 4 and 10 are definitely the two that have gotten me. 
