Measure both sides. Look at your front end right height. Determine if you want to raise up the low side, or drop the high side.
Also keep in mind if this has been a long term issue, you may have a broken torsion bar mount on the low side. There have been many that have found out the mount has broken loose and "twists" in the frame.
Keep in mind if you are able to balance it out you will need a new alignment.