The first 1.5 months are extremely hard and contained some of my darkest days. It does get better with time. Focus on yourself, try not to worry about what she is up to or thinking. Like they say use your time wisely, take stock of your life and what areas you would like to improve on for yourself and work on making those improvements.
At first you will miss yuor old life but as you continue down the path at some point you will realize you weren't overly happy either in the relationship. Find your own happiness so you don't need to rely on anyone else for it.
