It's what used to be called willpower. You are not forced to answer the phone, check email every 5 minutes, etc. Outside business hours, I continue to check my Blackberry whenever a call or email comes in -- if it is convenient. If it is something I choose to deal with at that moment, I will open the email. If not, it will wait until the morning. Even if I read the email I am not forced to respond right then.
I use the tools to improve my life, not to run it.
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