Your mental state is the foundation for your life. The saying goes, “your state of mind is a magnet that creates your reality.” More specifically, a confident mindset is unquestionably related to the level of success you can attain. A large part of life is communicating and interacting with others in order to achieve a mutual goal (a happy family, a winning team, a work related objective, etc) and it’s hard to get anyone to believe in the value you bring to the table if you don’t believe in it yourself.
A little confidence is paramount to taking action and accomplishing goals. Learn everything you can, remember your victories, and remind yourself of the unique skill set you can offer. It’s hard to defeat those with genuine confidence.