David Meyer wrote: "At the end of the Sola Scriptura authority tunnel I find a mirror and a clown suit. I'm not going to put it on. Christ either gave us a church that has a single knowable doctrine, or this is all just a big joke." (source)
I've found that the end of the Sola Scriptura authority tunnel has a book. That book is very near to me, in my heart and mouth that I may obey it (Deuteronomy 30:14). It is a lamp to my feet and a light to my path (Psalm 119:105). It is pure, which is why I love it (Psalm 119:140).
It is profitable for doctrine, for reproof, for correction, for instruction in righteousness (2 Timothy 3:16). It doesn't provide a clown suit, but it does outfit me, rendering me complete, throughly furnished unto all good works (2 Timothy 3:17).
It was written so that we might believe that Jesus is the Christ, the Son of God; and that believing we might have life through his name (John 20:31). Furthermore, it was written so that those who believe may know that they have eternal life (1 John 5:13).
That book, of course, is the divinely inspired Bible - the Holy Scriptures. Having that book doesn't mean always being right about everything, or even being absolutely sure of every last doctrine. What it does involve, however, is believing on the Lord Jesus Christ and possessing eternal life through faith in Him.