I can’t tell you how many times I’ve felt that way too,I can’t say I feel perfectly secure about myself. Personally I’ve come to love myself a little more the older I become and maybe you will too? Think of what makes you you and no one else and love those things. Also, sometimes you just need to realize that someone out there does care about you even if you haven’t met them yet and they do and will love you for you. I want to hug you.