Efforts may fail to yield results
It is pertinent that you bear in mind that friendship with your ex may be an impossibility for months or ever again as people handle their pains and lives in different ways. Be patient and bear in mind that it takes a while to heal. In time, you may discover that you are both have grown so far apart and have nothing left to be friends for.
If it so happens this way, revel in the good times and cherish the things you learnt while you were in the relationship. You’ve got no choice at this point than to move on as failing to let go will hinder new opportunities waiting to come your way.