Thus I Became Stress Free

. To have more money.
. To help my family.
. To get higher education.
. To achieve fame etc. etc. and many different answers like this.

But if you try to look little deeper, don't you think that all the answers are same, namely, 'To achieve happiness'.
Each of us is defining the same thing in his/her own way depending on one's priorities.
This could also be said this way:

. To have less sadness.
. To have less worries.
. To have less problems etc. etc. and many more answers like this.

This being a very broad topic let us for the present concentrate on having less worries
Or,
'Being worry free'.
Though it is not the same, but being Stress Free comes very close to it.

It is not that by some magic wand you would start having no problems, but it could be very possible that you could handle the problems in a different way, or you could manage your stress causing sources in a better way.
Said in a different way,
You could manage to be Stress Free.
That aspect of 'managing' is dealt with in this book."