As Yoda once said, "There is no trying young Luke, there is only doing"
When one is trying, they are thinking and planning which distracts from doing.
When one becomes aware they are happy, it diminishes a part of the happiness.
Perhaps your story can be explained by another ancient wisdom;
“Victorious warriors win first and then go to war, while defeated warriors go to war first and then seek to win”
â Sun Tzu, The Art of War