How we deal with our emotions shapes everything that matters. This is an excellent video on how emotional truth can help you navigate every part of your life.
Many people feel like they are imposters in their own life- either at work or in their personal life. Common thoughts could be: I have fooled them, I don't really have the skills to do this job, I am not as together as I look and so forth. Here is a link to an article published in Time Magazine that discusses it in detail.