What is the relationship between managing our emotions and our life satisfaction?

How satisfied would you be with your life if you could feel in control of your reactions to situations? If you could accept change as inevitable and you felt confident that you can handle whatever life throws at you? What if you could be joyful simply by deciding to feel joyful, or feel confident by simply deciding to be confident or make difficult decisions by changing them into easy decisions?

What if you could replace your disempowering habits without the need for that dreaded Will Power? And what if you could manage your relationships so that you could choose to feel good about the state of your relationship?