Worship God as if you see Him...

Tasawwuf (Arabic: تصوّف‎), is generally understood to be the inner dimension of Islam.
Classical scholars have defined tasawwuf as "a science whose objective is the reparation of the heart and turning it away from all else but God." Alternatively, in the words of the renowned Darqawi Sufi teacher Ahmad ibn Ajiba, "a science through which one can know how to travel into the presence of the Divine, purify one’s inner self from filth, and beautify it with a variety of praiseworthy traits."