What is Law of Attraction?

Law of Attraction is a law which is work in whole univers. Is is depend of frequency like as we think then we get same think which we thought earlier. Like for example if we are going to some where and we continuous think that we can get late to reach there then our mind send frequency to the univers and univers work on our frequency and in the form of result we will definitely be late. That is law of attraction and remember one thing that we have to think positive things always.