I think I have hoarding issues. please help ?

well today i was cleaning out my closet that me and my sister share. i found many clothes (about 3 large bags full) of my clothes from childhood. i am now 16 and i found clothes from back as far as third grade. i dont know why i would keep them but i realized that i never actually threw all my clothes away after i stopped wearing them. as i was filling up the bags with the clothing my heart got heavy and i got really upset and sort of teary (although i was holding it in). i feel like if i throw those clothes away im throwing away my childhood and i miss my childhood so much. im in a depressed state lately that times moving so fast and i wish i was back to the younger days. so i have those bags of useless clothing sitting in my room and i dont know what to do with them. its hard for me to get rid of them i feel like im losing my memories. same goes with items and papers and drawings and writings. i just dont understand. please help.