Remember God Always?, How to

Swami Sivananda: Constant repetition of the Mantra enables you to remember Him always, throughout the day and even during sleep! The technique is this: as soon as you wake up in the morning, sit down for half an hour and mentally repeat the Mantra. And, keep up the current during your work, too, by withdrawing yourself for a few moments every hour and mentally visualising the presence of the Lord in you and mentally repeating the Mantra. If you are established in this practice, very soon you will find that even when you are talking or are engaged in other activities—nay, even during sleep, the mind goes on repeating the Mantra. You will get God-realisation. In addition to this glorious Japa Yoga, Nesa Nayanar also practised the Yoga of Synthesis. He thought of God, he lived for God, he worked for God, he was highly devoted to God and loved Him. (pg. 170, Sixty-Three Nayanar Saints by Swami Sivananda).

Mata Amritanandamayi: To constantly remember God is not your natural habit; so you have to cultivate it. Japa is the prescription. Don't stop doing Japa for a moment, not even while eating or sleeping.

Small children who are trying hard to learn arithmetic will recite, 'One plus one is two, one plus two is three,' and so on, while sitting and walking and going to the bathroom. They are afraid that if they don't memorize the sums, they'll be punished in class. So, no matter what they are doing, they continue to practise the sums mentally. That is what you need to do.

Know that there is nothing in the world but God, that nothing has the power to function without Him. You should see God in everything you touch. When you pick up the clothes that you are going to wear, imagine they are God. And when you pick up your comb, see it as God.

Think of God in the midst of every action you do. And pray, 'You are my sole refuge. Nothing else is everlasting. No one else's love will last. Worldly love may make me feel good for a while, but ultimately it will only end up hurting me... Only you, God, can fulfill my yearning.' We should pray like this constantly. Without this kind of detachment, we cannot develop spiritually, nor can we help others. We should be firmly convinced that only God is everlasting.

......We should chant our mantra continuously, while sitting, walking, and lying down. By chanting the mantra and visualising God's form, our other thoughts will fade and our minds will be purified.
(pgs. 38-39, Eternal Wisdom Part 2)