Well the top reasons that leads to fail in trading is your fear.You are afraid that your coin might drop down and lose alot of money that if the reason why you sell early to avoid big loss but if you just have alot of experience in trading I say that you can avoid to fail because you will hold it strongly and wait for its value to rise up rapidly before you will sell it in order for you to earn big.Patience in trading is very important.
Well, the biggest mistake that we are having is not trusting ourselves or with the lack of knowledge with the coin that we are trading or with the process.
Don't worry, just analyze what are the things that we think make us failed and realize what other steps we are going to make to overcome and to avoid loss the next time we try.
That's why it is important to have a research in the coin and study it so that we don't regret on what we buy and hold it because we know that this coin will give us a big profit in the future.