ॐ आञ्जनेयाय विद्महे वायुपुत्राय धीमहि। You must near your eyes and make a visual picture with the Lord inside your internal intellect before starting the chanting of Hanuman mantra as this can hook up you to the consciousness of your Lord. भीम रुप धरि असुर संहारे। रामचन्द्र के काज संवारे॥ https://directoryunit.com/listings13213022/hanuman-mantra-an-overview