unproductive grief

... sometimes, I close my eyes and just imagine he is standing right in front of me. i keep my eyes closed and imagine the birth mark on the nape of his neck, the shape of his ear lobes, the feel of his short hair, ... i imagine tracing the tattoo on his arm, i imagine putting my hand on his cheek. ... it's a moment of bliss and peace...although, i'm not sure it's productive to be doing this kind of thing...since i'm supposed to be moving forward and through this grief. it's been a year ... i think, i should be trying to cultivate behaviors that encourage acceptance not melancholy and nostalgia.