Grieving although an essential part of experiential existence in the physical, is if taken too far, a trap of the physical leading to Karma.
Grieving itself focuses on personal loss which is augmented by the passage of a multitude of shared experiences based upon physical presence.
Grieving brings great sorrow which is not a true reflection of those experiences enjoyed and therefore distorts and dominates the memory of the joy previously experienced.
The antidote, although sometimes difficult, is to change the focus away from the immediate loss and reflect on the years of joy experienced in the presence of the incarnate that has now departed the physical form, and, ascended back into their natural frequencies of domicile. Do not dwell in the past (previous event spaces) though, for this is another form of Karma. Instead, wistfully remember that your incarnate life together was such an adventure, and plan the next.