I relate.
Even since I came to the realization that I'll be catching the bus one day I've become even more reckless than a I already was. I've been prone to drinking too much and being alone with people I really shouldn't trust that much, especially while intoxicated, since about 15. Going on 5 years later I've ditched a lot of the rules I had for myself- I'd sworn off any drugs but weed and booze, but now I take whatever I can get. I'm not as careful about taking my medication as I should be. I let my weight fall below the minimum I'd set for myself. I don't have a job, but whenever I run into any money I blow it all on stupid stuff.
I just wanna do as much living as I can before I stop and I'm not particularly inclined to be careful with a body that I'm going to discard, nor plan for a future that doesn't exist.