How to DIY it: Clean up any rough edges around the hole, then stick the patch onto the wall over the hole (left). Using the taping knife, spread a layer of joint compound over it and let it dry overnight. Then spread a wider second coat, feathering out the compound on all sides to make the patch blend in. Let it dry, then apply one more coat extending 8 to 12 inches beyond the patch in all directions. After the final coat dries, sand the area with a sanding sponge (a foam block wrapped in sandpaper) until it feels smooth and even. Prime, and then paint.
How to DIY it: This job can be messy, so protect nearby surfaces by covering them with plastic or cardboard. Spray the springs with garage door lubricant (about $7 at home centers). Don’t use oil, grease, or other lubricants. They may be cheaper, or you may have them on hand already, but they won’t work as well and tend to pick up dust and grit—just what you don’t want on moving parts.