"... my own self-imposed policy of 'cell phone-free Sundays': no texting, no emailing, no checking the map. My phone is turned off, or usually not even with me ... maybe you can designate this Thanksgiving as a phone-free holiday and pay full attention to the person across the table, whether it's your bumpkin cousin or your snobby sister-in-law."
Source: Meredith Melnick. "Turning Your Phone Off as a Technological Gesture of Affection." Time.com. 11/23/2010.
Another way to help balance time you spend with others or for others and time you spend with your mate is to know when volunteerism is hurting your marriage. It is okay to say "no" when that "no" is a "yes" to your marriage.