Your god is whoever or whatever occupies your mind most of the time.
Your god can be your children (7:190), your spouse (9:24), your business (18:35), or your ego (25:43). This is why we note that one of the most important and most repeated commandments in the Quran is:
"O you who believe, you shall remember God frequently; glorify Him day and night." [33:41]
To put this commandment into practice, we must establish certain habits whereby we guarantee that God occupies our minds more than anything else. The Quran helps us establish such soul saving habits:
3. God Willing (IN SHAA ALLAH): "You shall not say, `I will do this or that tomorrow,' without saying, `God willing' (IN SHAA ALLAH). If you forget to do this, then apologize and say, `May my Lord guide me to do better next time.'" [18:24]. This is a direct commandment that we must carry out, no matter who we are talking with.