I want to add one
do not be too confident with someone's issues and words, because most people only make decisions from following what someone says because they are lazy to do it themselves, recheck and develop their trading skills
because now many scam issues are scattered to make FUDs that will be detrimental
Yes,you need to be confident on your own decision if it anything goes wrong then accept it and move on and find how to recover from that.We also need to have self control over our emotions because when the prices were falling it is hard to resist our feelings so we may tempted to take wrong moves at that time.