It is very hard to find a specific layer in photoshop. Photoshop doesn't support searching of layers. This plugin helps you to do so.
Quickly search through your photoshop layers. Focus by click.
git clone git@github.com:markupwand/photoshop-layersearch.git
cd photoshop-layersearch/
rake
I have tested it only in Adobe PS5, Mac.
After opening a psd file in photoshop, Window->Extensions->LayerSearch