Hi, I thought you may like this Mentalrobics exercise from Braingle.com:
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Social Interactions

As we have learned, events with emotional significance get preferential treatment by the hippocampus [ For more on 'hippocampus' go here: http://www.braingle.com/mind/330.html ] and are more likely to make strong memories. The most important way that emotions are created is from interactions with other people.

Modern technology is constantly reducing the social interactions that we have on a daily basis. Drive-through pickup, self-checkout lines, Internet shopping and email are examples of ways that today's technology isolates us from face-to-face interactions with other people. Humans are social beings, and social interactions are required for good mental health. Several studies have shown that people with social lifestyles have stronger cognitive function than people who are reclusive. Social ties can also help one deal with life's stressful [ For more on 'stressful' go here: http://www.braingle.com/mind/534.html ] events.

Try to get in touch with more people. Strike up a conversation with the person next to you on the bus, or the checkout person at the store. In addition to the mental benefit, you will be making the other person's day a little more interesting.
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For more mind exercises: http://www.braingle.com/mind/