Lieback and stem up the finger crack in the corner, until the corner ends and and your standing on the obvious pedestal looking at a steep bulge. A few awkward moves pass this crux section, with tricky thin pro after one bomber nut placement, then some easier climbing to the anchors.
This climb seems hard for the grade, with a crux that's about equally difficult to Manic Crack but not as overall sustained.
Location
On white face right of Wailing Banshees are 2 finger cracks (the "twin cracks"). Lost Nerve is the right one of the two, which starts in a shallow left-facing corner. The arete to its right is dark, and the sport climb to its left is Manic Nirvana.
Protection
Rack of nuts and cams to 2", with optional doubles of finger size cams. Angle left at the top to the 2 bolt+chain anchor for Manic Nirvana.