Begin your day intentionally recognizing a God who is present.
Practice turning the mundane into holy moments: tasks that you need to get done that are somewhat mindless are great opportunities for prayer or to reflect on God.
Stop mid-day and pray (converse with God), interrupting your regular routine to pause and acknowledge a God who is aware of you.
Another practice, the Daily Examen, is a way at the end of your day to reflect on where God was knowingly present in your day and where he seemed not to be present; reflect on both and ask why this was.