ah man, I too, always struggle with those fucking jars. Jars in general always need an extra unnesessary effort. Why do we, as consumers can't be treated properly on this ridiculous matter!

Hahah.

Anyway, I've found that using a knife helps to pop the lid off. Also hitting the lid (not the jar, preferably) on the side of the kitchen counter

Actually, try gently tapping the lid on a hard surface.. like try bumping the sides, so it gets off the swirling rails, ya know? If that made any sense.
Good luck. :rasta: