How to find your own comments on YouTube?

How do you find comments that YOU wrote to a video/comment thread if you dont remember what videos/comment threads you wrote what to, especially if theres 1000's of comments..if you look in data history and it says 'jonsmith commented on so and so video today" and it brings you to the vid but not the comment out of 1000's or sometimes ive clicked on data history and brings me to the vid page but its blank....Have comments id want to save! Thanks!