What can I do to get my ex out of my head?

u always have to remember why u finish with u and whats went wrong with ur past relationship with him,sometimes we forget about it and dream being where we was before but the truth is that what we had was not good and we only was hurt by being so confuse and lost,don't ever forget that what u did was the best what u could so keep reminding ur self that was the best option and its time to make ur life and even maybe time to find some1 new a fresh start u must feel a bit lonely so u do think about ur life but life is good u free and happy u just don't know that yet,enjoy ur life and don't waste ur time on a loser,all the best