Happiness as a Habit

Is happiness a feeling that comes and goes based on circumstances?

Or can you take steps to develop the habit of being happy, regardless of external forces?

I'm about to turn 44 years old. The first 42 years were a rollercoaster of emotions- and lack of emotion as a defense against the bombardment of anxiety, guilt, depression, and shame.

My new book will be released in February. I tell my story and my strategies of turning my life of anxiety over to a new baseline of serenity, anticipation, and happiness.