LOL no. I almost failed out of high school, literally, because I just refused to do anything. I never did homework, never tried on tests, never even took the SATs. All I cared about was writing my terrible blogs (heh heh) and doing the occasional play. (And having a lot of needlessly complicated disputes with my social group, usually over boys.) It took me another two years of doing basically nothing to go to college, and then I did pretty well, but only because I only took classes/did things that really interested me.
I have (I think?) a lot of work ethic now because I do something that I love and care about, and I find that it’s a snowball effect. I am motivated for many other things in my life because I am motivated for work, and when I am diligent about my personal tasks, I am more diligent at work, etc. I think I have become a ‘together’ person over the past few years because I like myself — and life in general — a lot nicer when I actually try.
My advice would be find one thing in life (it doesn’t have to be work) that you get really excited about. My first one was swing dancing class, and then my French-language meetup groups in DC (meetups are free, by the way, and a great source of Regular Shit To Do That Isn’t Drinking). Those interests snowballed into a million other things, but it was crucial to lazy, lazy me that I start small. Start small.