Don't remember people/relatives/friends/etc when it's convenient. A relative who lives alone might enjoy a text once in a while. Even if it's a hello. If you tend to get absorbed in your life and forgot about granny sitting over there in the nursing home, maybe you should send yourself a weekly reminder to call her every Saturday. It might extend her life just knowing her loving granddaughter is going to call her every Saturday at 7pm. No matter what.