A friend of mine was in a Mussar Vaad and was instructed by the leader to think about G-d a number of times through out the day. He confessed that it was very difficult and a member of the Vaad was texting reminders throughout the day.
I faced a similar problem a number of years ago after having been inspired by the sefer Bilvavi Mishkan Evneh to think about G-d throughout the day. I set up a few recurring reminders in MS Outlook. After a week or two the reminders were quickly dismissed without much thinking about G-d.
So we’re faced with a problem. We need to think about G-d to have a relationship, but how and when? Perhaps when we mention His name during the 100 blessings we recite each day. However, as many of us will admit, we often find it difficult to focus when we’re davening and saying brachos. We’re a distracted nation.
But we need to start somewhere. I think it makes sense to start with the most important time to think about G-d, and that’s when we say the first verse of the Shema: “Listen, Israel: Hashem Is Our God, Hashem Is One”.
The fifth chapter of the Shulchan Aruch says that when we say the four letter name of Hashem, like in the Shema, we should have in mind that Hashem exists, always existed, always will exist, and He is the Master of Everything.
Based on experience, I will warn you that thinking about Hashem twice a day during the Shema is not a simple matter. It will require some effort to do it regularly.
Teshuva is a tremendous opportunity to strengthen our relationship with Hashem. Thinking about Hashem when reciting the Shema is a good step on the road to that stronger relationship.