[jononor]

Focus on your strong and positive attributes. Right now, during your search process, every day, and during your interview. That is the important stuff. You got a master degree in CS, and 7 years of experience. That is very valuable skills, well recognized in the market. And it is proof that you can do this shit. Go and write down all the things you are good at. The things you have done. From the mundane to the extraordinary. Also include the things that you feel "anyone could do that" (it does not matter if someone else could, and it is probably not true anyway...). Revisit this list every week, keep adding. If you find it hard, ask someone you know to help you - just ask you about previous work, relevant hobbies etc, and write it down. Read this entire list the day before your interview. Mark any of the things that might be relevant for the particular role. Review on the way to the interview / while waiting. Being the list with you in if you feel like it. And scan it before you say goodbye. Don't forget to breathe, eat and sleep :)