It's good that you are able to face failure, so I'm sorry to be blunt: that is a coping mechanism that can lead to serious health issues. Eating "comfort food" or even the excessive consumption of healthful food can have bad consequences. I hope you will learn better ways to handle failures, such as meditation (I wrote an article a few days ago: https://steemit.com/meditation/@reveurgam/meditation-choices), and remember that success is achieved by not giving up. :)