Before going to sleep at night, recite Durood Shareef 1100 times and یَاباطِنُ Ya Bātinu 1100 times, then engage in meditation.
The heart of one who frequently invokes this Divine Name of Allah becomes filled with love for Allah, and light fills the heart so abundantly that divine secrets and inner mysteries begin to unveil themselves.
When meditation succeeds and the inner eye opens, one converses with angels. All beings of the unseen world regard it as a privilege and great fortune to witness such a person.