But I haven't got the grit, wit, or wherewithal to stay sober!

Of course you haven't. That's the point. That's why we say we're powerless.

The only problem is failing to recognise this and trying to stay sober as someone without the grit, wit, wherewithal. We're inadequate. That's why we need God, and God fills in the gaps.

There's no point in thinking you can't go to God until you've untied the knot. God is there specifically to untie the knot. That's God's job. So embrace your inadequacy, go to God, and serve him by filling each day with a list of wholesome indicated activites, and in return find your entire life taken care of.