Usually, I think of a good time as a transitory thing. Like, I went to the movies and had a good time. Or we went over to a friend's house and had a good time. But I mean it in a broader sense.
This is a good time in my life. I am comfortable with who I am, and how I am. I love where I live, have a good job, a happy marriage. Our son is a pleasure, and watching him grow is a joy. School has done what I hoped it would do for me, and I feel energized by my classes and classmates. I have good friends, and my circle is expanding. We have enough of everything.
This might sound like I am building up to a "but" -- I'm not. I'm just feeling reflective and full and content. And that's a good time.