Just think the thought, and Azrael is there. A sample invocation is:
“Archangel Azrael, please comfort me now. Please help me to heal. Please lift my heart above heaviness and help me realize the blessings that this situation holds. Please help me release my tears and connect to my beloved in Heaven. I ask that you infuse this connection with energy so that I may clearly communicate with [him or her]. I know that my loved one is nearby and that you watch over both of us. [If there is any situation related to the grief that you need help with, tell Azrael about it now.]
