The more you pick something that's a true interest, the more likely you're going to bond through that interest. The friendship stuff will come out of that. It's something you want to do anyway, so if you don't form friendships, it doesn't bother you because you're enjoying the activities.

My research found that the No. 1 time waster was doing too much at once.

But too much routine -- if you're not getting from that routine what you need and want -- that's when it can become a rut.