animal cat cats pet pets sleeping kitten kittens sad close up dahlia flora floral flower flowers macro organic petal petals pink plant spring againstlight Fir forest green moss natural nature pine spruce sunbeams sunlight sunshine young trees alone bandoned depressed female friends friendship girl girls outdoors people sit sitting thinking young beech beeches birch birches cone dark leaf leaves oak oaks pines sunrays wood woods sadness black cosmos desktop earth galaxy globe moon planet planets science sky space star stars sun texture universe depression despair distraught hair headache pain stress teenager tired tiredness unhappy woman