A meditation to be in a loving relationship with Hashem
Hashem concealed his infinite light out of his love for us, so to we should restrict our desires for His unity.
There are 3 general concealments between the three worlds of Briyah, Yetzirah and Asiyah.
The purpose of all concealment is to create our physical bodies, to practice restraint, to transform darkness to light and to dedicate ourselves exclusively to Hashem.
Like מים הפנים אל פנים as Hashem loves us so He diminished himself so to there should be nothing more important that to cleave to Him.