I suspect

[loukasenna]

that when you have to make a choice or a decision about something, you do so immediately. Your mind just doesn't let you know what that decision is right away. Thus all the hesitating and going back and forth for the longest time. And thus the feeling of rightness when you think you have made the right choice. Because you haven't really, at least not just then. You have just finally accepted what you already decided the split second after the choice was set before you.