I had a therapist tell me, before I could "hear" it that with opposite feelings it show we have as much capability with the one as with the other. The depth of a negative feeling, for example, says how capable you are of feeling the opposite "good" feeling.

If you have been in love and know about how infatuated one is at first? I think my experience felt like that; it "calmed down" wasn't as extreme but I was increasingly content and felt "warmth" for my T and others (and myself :-) more often wasn't connected so extremely, just "normally" and that feels good because it's not so extreme :-) I felt more competent and sure of myself too, more "centered". I feel more "personally" instead of feeling like it's the other person doing something that makes me feel as I do.