I've lived by this concept for a long time now, I'm guided by it.
Have you ever missed out on a job, a boyfriend, a house... and at the time it's the worst thing imaginable, you are devastated... however, weeks, months and even a few years down the track, it turned out to be the best thing?
It's happened to me so many times in my life. My last experience, that I'm aware of, is buying my current house. We'd found a house that we desperately wanted to buy but the vendor was playing hard ball. In the end we had to walk away from it. I was sooooo upset. However, two weeks later, another home in the same street became available that was MUCH MUCH better in terms of the house itself, its position and it was cheaper, and a private sale! Phew, thank goodness we didn't get the first one!
I was getting my hair done a few weeks ago and noticed a young woman's tattoos (pictured above). She strongly believes in this concept too and was telling me about a recent flat she'd missed out on but only for another much better one to turn up a week later!
It's only in a state of reflection that you see the concept at work. I have so much faith in it from my past experiences, that I allow it to guide me through life. I am now more relaxed and say, "if it's meant to be, it will".