Being Happy

I wrapping up my latest read, A New Earth: Awakening Your Life's Purpose by Ekhart Tolle (AKA the Oprah Book) and it has me thinking. This is a good thing. I like things that make me think, and get me wondering about how I am approaching this thing we call life. While the book is not thick, it is quite dense and it is taking me a while to get through it all. On the one hand it's simple, but at the same time quite complicated.

It talks about happiness as a simple choice, but it just doesn't seem that easy to me. Today the last thing that had me stop to contemplate was this passage.

"Nonresistance, non-judgement, and non-attachment are the three aspects of true freedom and enlightened living." pg. 225

I get it theoretically, but what I am struggling with is how you can passionate about something yet be unattached? I just finished a personal development workshop where we focused on the concept of commitment vs. attachment and I am still struggling to find that balance.

I guess my question is this, if true happiness is being at peace and the key to peace is non-resistance, non-judgment, and non-attachment and its very difficult to live by these three tenets, does that mean it is difficult to be happy?