25 with very little savings - is this recoverable?

Thanks for reading. I know - just save. I’ve opened up a NAB Smart Saver account just last week and have thrown my paltry $9k in there and am transferring ~65% of my income each week the moment it comes in. Trying to pretend that what remains is my true balance for the rest of the week, and only looking at my savings account every month or so. I feel like such a fuckup. I spent the last 4 years earning 75k p/a working full time through the first half of my twenties and have nothing to show for it beyond an old car and a couple holidays under my belt, blowing it on going out every other night with mates and conveniences like uber and food delivery. Luckily I’ve avoided accruing any debt, but I feel so behind for my age. My girlfriend (also 25) owns her apartment (a small place, but still). She’s asked me to move in with her when we finish our degrees in a year and a half. I want to be better for myself and to show her I’m serious about our future together and that I can do this for us. I’ve never been taken in by the pokies or impulse buying, I just never built within me or had the discipline instilled to save. I’ve got a copy of the Barefoot Investor which I’ve been following to the letter. Am I fucked? Can I recover? Is there anything I can do for myself beyond throwing it all in a HISA? I've got 28k in Super.