Qur'an states:
يَا أَيُّهَا الَّذِينَ آمَنُوا اذْكُرُوا اللَّهَ ذِكْرًا كَثِيرًا
Translation: O you who Believe, make abundant remembrance of ALLAH!" (33:41)
Our Prophet said;
“The similitude of someone who remembers his Lord and someone who does not is like that of the living and the dead.” (Al-Bukhari).
Therefore, a person who remembers his Lord is like living thing and that person who does not remember Lord is like dead.
So remember Me, I will remember you. (Quran)
