Not long after I started blogging, I found an article that discussed the relationship between maternal neglect and lack of magnesium, which mentioned how blue chamomile essential oil combined with magnesium and vitamin D helped to relieve anxiety. I tried the combination and it did work: I no longer feel the "hole" of not having a supportive mother. I can't quite tell you how it happened, all I know is that, gradually, the feeling disappeared. I think that's the thing with oils, they're very subtle but powerful at the same time.
The link above has a fair amount of information. I have found the oils to be particularly useful when dealing with stressful situations.