You don't need to look at the big picture. Keep it simple. Don't drink today, reach out to your support group (and although parents can be supportive, unless they are in recovery they will have no idea what youre going through) so your support should be other people in recovery
Post on this site, and take time to read other posts. You can do this. You do not need to fix your whole world. First just get some sober time put together. The rest will sort itself out
But you have to start at the beginning, which is to stop drinking.
There are so many of us on here who had destroyed parts of our lives. Once we got sober, that stuff was much easier to sort out.