How much is too much?

In OA, we talk about being careful not to "pack too much into the stream of life", but what really does that mean? 
How much is too much?

I've learned this amount could be very different for each person asked.

I love to go go go.  I like to have lots of things to do each weekend, and lots of people to join me.
My partner, on the other hand, likes to have one thing to do with friends, and then lots and lots of free time for herself and us.  Two very different concepts.

So...how much is too much?

For me, too much is when I start dreading the activities that are planned, when I don't want to go and get crabby and/or in a funk.  Or, it's when I'm doing so many "extras" that I fall behind or dread the things I HAVE to do, you know, like go to work.  Yes, I have taken a vacation day just because my weekend was too overbooked.

But, because my partner and I have such differing ideas of "too much", we try our best to find the happy medium.  This isn't always the case, of course, but it's our goal. 

She has slowed me down so that I'm not exhausted come Monday morning, and I have revved her up so that she is active and surrounded by friends and meeting lots of new people.  We both agree that, although we sometimes sway to too much or too little, for the most part we work well together and we are happy and content.

So, how much is too much for you?