In a world where experience matters, it is natural to not feel secure for a lack of those. And people generally do not do well and at their best when they are insecure. That could possibly single-handedly decrease your chances of success in your chosen field. You see, everybody started from the state/level of inexperience. Only after considerable time and effort put in, would they then be experience. However, it is important to embrace your inexperience at the beginning and supplement it with lots of energy, positivity and the willingness to learn. Most people generally wants to help others, especially those that are starting out. And having those previously mentioned qualities will only make you a likely candidate to be taken under their wings. So do not feel insecure of your inexperience. Instead wear it with pride. And at the same time, make a conscious effort to get better acquainted with the things that you need to know.