The CEO of the startup I'd just blown-off a job at (showed up the first week, "worked at home" for another couple of weeks, then stopped showing up entirely) drove over and knocked on my door to find out what was going on. Drunk off my ass, I told him, and that I'd get some help. So I made That Call and got some help. Did about three weeks of inpatient care (Stanford recovery unit, and then a place in the Santa Cruz mountains), then moved into a halfway house and spent a lot of time in AA meetings [AA is controversial, I know]. Never spent another night in that townhouse, wound up selling it. That CEO hired me back as a consultant a few months after I got out of inpatient.
I've got 18 years sober now, much of which I've spent working on software at great companies on products you've almost certainly heard of and probably used. Married, with a teen-age son, and doing better financially than I ever would have imagined. Still going to AA meetings, though nowhere near as often as I probably should.