A very long time ago - about five years, I told I friend, that I thought I was barking up the wrong tree. It later turned out that I _actually_ was barking up the wrong tree. But that, was a long time ago - it's been ages since I've spoken to that friend(?), the tree that I thought was the right one back then isn't (or wasn't) the right one either and there have been several trees since then. And all those trees in between were all wrong. The only thing that still holds is the canine allusion.
At eleven in the night, when you are perfectly sober and sane, you can't really blame it on the alcohol. Blame it on myself. Bah!