Its also important to rectify those mistakes. Certain people do understand that they are making a mistake but they fail to take countermeasures to rectify them. A few of the most common are entering in the wrong point of time and getting FOMOed. Panic selling is also a important "mistake" but its debatable.

Most of them can be avoided once the person gains experience but controlling their emotions are also important. Specially when you are trading on a bear market. Wrong point of entry can be corrected by patience and planning of when to enter with a target exit in mind and FOMO can be avoided by forgetting about that specific coin and avoiding it - but keep an eye on it in future if you feel its worth it.