Why can i get over things?

  tell me why i cant get over things from middle school? Im almost able to drive! And i still cant get over the fact my mom kicked me out in 7th grade and the fact that i was accidentally cheated on by my current parner 2 years ago. Im a mess just thinking of sh*t like that. I miss my realationships with people before then. I cant get over the fact that i could have helped or i could have done somthing about so many situations. But i just dident or i dident try hard enough. So many people see me as so many things and truth be told i dont even want them to see me... 

Idk, im just a lost cause ig...