How do you heal yourself after you have broken up with your gf/bf?

Tweet

I have a colleague who is facing this serious problem now. She just broke up with her boyfriend but she just cannot let go. She went to beg her ex boyfriend to have him return to her side. She cried and kept her in the room. Now the problem has getting worse that she have applied two days medical leaves but in fact she is hiding in her house. She feels extremely depressed now. What should I do to help her? If you were her(of course we never wish this kind of thing will happen to us),what would you do to heal yourself? Please share your tips or even experiences. Thanks.