Shut Up And Be Happy Already
You know how it works. We say that we will be happy when we have reached a certain point, but as soon as we get to that point, we start setting up new points to reach before we can allow ourself to be happy. And so it goes.
You don’t have to play it that way. In fact, you can game the system by reversing it. Use techniques which forces you to be happy first and then your brain and body will perform better. Check out this TED presentation for some useful tips on how to change your mindset.