I flunked out of university on my first try - wasnt passionate about what I was studying, had no goals, overweight, extremely introverted - ultimately, entirely due to my own mistakes. I realised I needed to fix those faults and shouldn't dive in straight into another degree. So I worked in a sales job which helped me grow a lot and after 8 months, joined a different university to do an accounting and finance degree, and killed it (and collected some decent extra curriculars in university).
I left out this information (first university and work experience subsequent to the failure) due to lack of space in my resume. I'm wondering if I should talk about this should the topic of failure be brought up during my interview. My friends are advising me to steer clear from mentioning this as they see it as too egregious a fault for MBB. I'm inclined to mention it as it was a turning point in my life and I'm proud of how far I've come since.
Appreciate some advice on whether I should bring this up during the interview should I be asked about past failures.