I have the same trouble you are having. I feel like my exercise is too forced- Walking in the morning and evening, strength training every other day. One thing I like doing now that it is summer is getting a group of friends together for a BBQ at a park. Don't mention anything about "playing" or exercise, but bring a volleyball or basketball and just sort of start up a game. What about dancing? Get a group of friends for a night out on the town and head to someplace with live music. Like tonight, I am heading to a park that has live local music. Many people bring lawn chairs to sit in, but I like to get up and dance around...which usually gets others up and dancing as well. Do you like to hike? Try new trails and take a drive to a great place to hike. Or maybe go to a pool. You don't have to swim boring laps around the pool- just jump in have fun! Have a pool party! I am trying to branch out more as well...just have to start thinking outside the box!