One list I found online offered sample answers to over 200 common interview questions! I don’t suggest memorizing answers to 200 questions, instead pick broad questions that when answered can feed into more detailed questions. Questions like “tell me about yourself”, “why do you want to do this type of work?”, “what are your strengths?”, “what are your weaknesses?”, “what motivates you?”, “where do you see yourself in five years?”, “talk about a past success?”, and “talk about a past failure?” The thought process applied to answering these questions will prepare you to answer follow up questions.
You are now formally learning about yourself, well, really you are reviewing and organizing what you already know! As you read over and review your notes you might add details as you think of them, remove what is not necessary, and you get better at thinking about and organizing information about yourself.
Next, practice speaking your answers to these questions. Have friends and family interview you using the questions you have prepared answers for. When you are comfortable answering those questions have them ask different open-ended or un-scripted questions about you as a professional. If you can’t find a friend or family member present to yourself – into a mirror – or to your dog or cat. Practicing articulation will make you feel more comfortable when speaking to others and once engaged you will likely come across as confident, capable, and self-aware.