Notice: when you happy, while walking with smile, your mood is very contagious to other people around you. They start to smile back, saying greetings. You might even make new friends while smiling.
So, positive vibrations attract positive vibrations. Universe hears your inner voice: “I am happy”, – and bring you another happy things. Remember, when couple happy things happened seem one after other, and we think: “I am lucky today!”
“Thanks” to only you. You are creator of good mood, positive vibrations, and as result – happy day.
So it is doesn’t matter what really happened, but it is very important to feel happy, because it creates positive vibrations and happy you.