I have an anecdote to share. A few years ago, my bestest friend and her long-term live-in boyfriend split up. Suddenly faced with one income instead of two, she was having a hard time making ends meet, falling behind, borrowing from her parents. She asked me for advice because it's kinda what I do for a living - not a personal financial planner but I handle finances for 2 of my boss's companies and do the planning, savings vs. spending, decisions about cash purchase vs. loans, stuff like that. I was happy to do it and hopeful of being some help. She gave me access to everything - copies of all her bills, password to her online bank account, everything - and I spent a great deal of time looking at every last bit of it, trying to think of solutions and offer helpful suggestions. Not writing that like I'm bragging on myself, just that I really truly tried - I didn't just look over her check register and say, "You should downgrade to basic cable."
I put together this huge document - 5 or so pages - of a list of things to change and suggestions to try, everything from starting an Etsy shop (she is very artistic and gifted with jewelry making, but only does it to give as gifts to friends/family, not as a money maker), buying a fuel-efficient car (she commutes over 100 miles/day in a huge, gas-guzzling SUV) to simply staying more aware of her bank balances. In one month alone, she'd racked up enough NSF charges to pay any one of several of the bills she was behind on. Seriously, like $245 in just one month.
My husband and I refer to that document as "The Great Budget Manifesto". And out of all those things (some easy, some more difficult) that I suggested, in the 3 - 4 years since, the only - the ONLY - suggestion from The Great Budget Manifesto that she implemented? She switched to an unlimited text plan on Verizon b/c I pointed out that she'd racked up far, far more in text overage than upgrading to unlimited would cost. I don't mean to imply that she should have followed my instructions to the letter, or that my way was 'right' - rather that she asked for advice, I took it way seriously and tried to do a good job, and...well, not nothing, but not much.
My point is, sure, offer some suggestions or point her in the right direction, that's what friends do - but don't be surprised if nothing happens, they don't change, and the $50K is gone as soon as a $1000 bonus is, and them with as little idea as to where it went as when you check your wallet for exact change and don't have any. I think people can change - habits, behaviors, beliefs - but until it really matters to them to do so, they won't.