| Every soul has its own unique Tikkun - my Tikkun could very well conflict with your Tikkun. Our souls will continue to be reincarnated until their jobs are done.
A Tikkun doesn't have to be a good thing - it might be a component of a larger picture, a wider process, which in itself is what we would broadly class as "bad". This is in line with the Jewish belief that although God is often less than all loving and benevolent, he knows what he's doing.
Orthodox Jewish people often use the expression "Tikkun", or "this is my Tikkun" in very much the same way as people in the far east use the word "karma" - almost down to the shrugging of the shoulders... | 
