How do I change a pictures texture in photoshop back to normal?

I accidentally kinda like randomly picked textures (yesterday) and saved it and so on. Is there any way to bring it back to normal?How do I change a pictures texture in photoshop back to normal?
The FIRST RULE OF PHOTO EDITING: Never, Never-Ever work on the original picture.





Your first step is to open the picture. The second step is always MAKE A COPY OF IT and then close the original. To make a copy drag its layer to the copy layer icon then drag the original, the Background layer to the trashcan.





Or you can highlight the Background layer in the Layers Palette and go to Layer in the main menu and click on Duplicate, then right click on the Background layer and choose Delete.





Once you've saved and closed the photo there's no way to undo the effects you've put on it when you open it again. We all destroyed some pretty good pictures when we first started editing. Sorry.