Although no two people are exactly alike, and thus no one can find perfect instruction in another’s (even perfectly) articulated feelings, experiences, etc., one can, after sufficient search and study, piece together a broad mosaic which may help him (or her) catch an ‘articulatable’ glimpse of some of his (or her, godammit) own ever-fleeting and kaleidoscopic whims, reactions and collisions.
After collecting enough of those infitesimile slivers, one starts to notice patterns and repetitions, and those slivers eventually start accumulating bulk, until one has a better grasp of his (or her, godammit) experience.
And if they be generous, they can then labor to articulate it for others and, thus, expand, however minutely, this ever-growing public mosaic.