Yes, as a student and during my divorce.
My student overdraft was only £450 but back in the early 90s it felt huge and it was a real struggle to stay within that, despite getting a grant, a p/t job and occasional contributions from my dad. Left uni and got a job, sorted, paid off in 6m.
During my divorce I lived off 2 overdrafts, paying legal bills plus really struggling to house, feed and clothe 2 kids despite working and claiming whatever I was entitled to. We ate cheap rubbish food and accepted all offers of meals at my mum's, drove a shit car, no holidays, zero nights out etc. Kids now older, legals paid, can now work ft with no childcare costs (or guilt).
It really helped to really thoroughly go through every penny coming in and going out each month. Cut right back. Bin off everything you can for as long as you can - set a target for say 3 months, no gym, no sky, no new mobile contract, no takeaways, no coffees from Starbucks, no haircuts/nails/new clothes. Really blast it. Don't take your bank cards out with you. Use cash if you must. Meal plan and go to the supermarket once a week, and stick to it.
You will see it has a huge impact, and you will want to go another month, and another.
The biggest thing I found that helped, psychologically if not monetarily, was to open up a new account. Get your salary transferred in and the standing orders/direct debits you're keeping. Zero overdraft. Set up a new standing order to the old overdraft account, even if its just a few pounds more a month than the interest you'll be paying. You'll still owe the money but its separate to your everyday account, and as long as you're paying it off bit by bit you'll see it reduce to nothing eventually.
TLDR: Cut back on every single outgoing, separate your everyday stuff into a new account (without an overdraft)