How can I overcome self-doubt?

What is self-doubt and how do you overcome it, both for yourself and for those you work with?

This 22-minute video session, with Zoe Bennett from the Charity Finance Group and a group of charity peer mentors, explores how to acknowledge self-doubt and imposter syndrome in ourselves, and in people we are mentoring either formally or informally as part of our teams etc. The session discusses ways to overcome self-doubt, and gives examples of good questions you can use in mentoring sessions and one to ones, to help your mentees and your team find ways to best manage these challenges.

What ways are valuable for you to maintain your confidence, if self-doubt creeps in?