This is a great question, I would recommend working on your communication skills, Specifically Public Speaking. This will give you the confidence to go after and career.
If you are asking about helpful life skills I would suggest it is important to be good at critical thinking. Critical thinking means doing an<span style="color: rgb(34, 34, 34);"> objective analysis and evaluation of an issue in order to form a judgment. Many people let other people do their thinking for them and simply accept those opinions. Critical thinking means you are prepared to question and determine your own opinions. Good luck.</span>