How can i stop feeling lonely?

am 14 and my mom died when i was seven , my dad has traveled for work and my stepmother is here but why do I always feel like my life is empty , and i always blame my lonliness on my mothers death , my dad is alive but i feel like he is away too , i hate my stepmother and she doesn't care about me at all , i have friends but i still fel the emptiness in my life , i usually sleep alot , i really want to know if this has anything to do with lonliness , and how could i get rid of that feeling