Serendipity and Synchronicity exist in this world, there can be no doubt. While I think the Law of Attraction is a lucrative concept for New Age peddlers, I also think there are things beyond our immediate comprehension that do occur, yet are not beyond our awareness of existing.
Some swear by this Law of Attraction, some by Fate, alone and still others by the intercession of Saints. And sometimes I think that guidance comes before the question is even asked. I have found that deep meditation seems to bestow the things I need, and this may be because the process of meditation lets go of expectation.
I went through a phase studying the principle of the Law of Attraction when going through some desperate times and no, it did nothing for me. In saying this, however, I have received profound gifts from what one might say are "from the Universe", but they have not really been in the material sense, although those things have occurred as well. Meditation has shown itself to be the deepest conduit in experiencing synchronicity in my own experience...and a sense of calm acceptance of things I cannot control or change.