I agree with Arthur's point of view.
Passion=love and love is being open in the present and willing to give -however small and minor this giving may seem to you- without expecting to receive.
I find that when I get in this "mode" I feel happy and alive.
I am not sure if this is where you come from too; I know for myself that I have been repressing every feeling (actually I thought it was the bad ones I repressed, but it turns out that in doing so you repress also the good ones).
So I have reached a point where I was not really feeling anything- or at least never intensely.
In the beginning you may have to "urge" yourself to act against your natural habit, and just do/say this good spontaneously, thinking you are simply offering a gift to someone (or the Universe). Especially with people it always inspires me to see the happiness in their faces.
Just my two cents...