Answer:
accept life's disappointments
Step-by-step explanation:
accepting life's disappointments is a good thing because it can allow you to see that life isn't perfect, and you shouldn't expect it to be either. there's going to be disappointments and successes for everyone.
feel uncertain about themselves <--- not good; can lead to poor decisionmaking and low self-esteem
let their emotions drive their decisions <--- not good; can also lead to poor decisionmaking. or just really bad decisions that you'll regret later. sometimes it's actually better to not let your emotions drive the decisions you make, and use logic instead
do not to laugh at themselves or with others <--- not good; you should be able to laugh at yourself! it can make you feel better because you're not 24/7 taking yourself seriously. it's okay to just laugh at silly mistakes you make