How do you get back to your original image after you have made adjustments, closed Lightroom, made more adjustments, closed Lightroom etc?
Hit the "reset" button on the bottom right of the Developement module if you want to throw out all the changes you've made. Make a "Virtual Copy" and hit the reset bottom if you want to save the original with changes. You can also use the "History" section on the left to remove any selected changes.
North America
Europe, Middle East and Africa
Asia Pacific