STOP!
Think of a person close to you, right this very moment. Who is it that you see in your mind?
If its someone from your family, why not give him or her a call right now? Just to say hello and find out how are things at home?
If its a close friend whom you just saw yesterday, why not drop him or her an email or a sms to tell the person how much you enjoyed last night and would be looking forward to the next time you guys meet.
Ifs its a friend you have not seen in sometime, well, don't you think it is high time you do?
If its someone you love, why not just tell him or her that, right now, in any way you can.