I loved a girl very truly and she also loved me a lot.But because of some personal issue

And make her life,she went away from me.. She left me and it's the hardest part of my life,anyone's life ahen someone very close leave.But I am waiting for her with same love and same spirit,Just to get the happy moments with her again.I don't know whether she will come but once I promised her that whatever will happen in our life.I will be the same and my love for you will be the same.That is the reason I am waiting for her.I loved her a lot and will love always.My love for her will never change even after many years.
I don't what to do for this very moment to make myself happy.
I am trying my best to make myself happy but I am not able to do.. Can someone tell me what to do to make myself busy

As long as you allow yourself to remain stuck waiting for something that most probably won't happen,you are putting your life on hold for another person.

Bad idea,you need to start loving yourself and do at least one thing every day that you enjoy doing.

Go out with your friends,find a new hobby-and one step at the time you will be able to leave this behind you and be happy being YOU again.

I feel your pain, but maybe its best to love yourself for now, and find other things that make you happy, besides her, so you can be enjoying yourself while you wait. Renew contact with family, and friends, and do what you did for fun before you met her.

Move on and forget about her, I know it will be hard but this is what you need to do. I played the time apart game and all it did was hurt me in the end. All you are doing is hurting yourself and she knows that what she is doing is wrong and that it hurt you bet that's how some people are, selfish.

I am trying the same to forget her as soon as possible.. Because I am hurting myself daily.. I have taken some break from my office and going to home to spend some time with my old friends,parent and sister.. But I don't know whether it will work out or not.. One day when I told her that I am leaving from her life in anger,she was crying a lot for me and now she damn care about me.I have not talk with her from one week,I have not told her anything bad also to her.just I listened her and let her go.. Problem is she is in my office and her desk is in front of me.. So after coming from home also,I have to see her daily.. and this is my big reason to worry..

It's good you're taking some time out-enjoy the break.

As your ex is a co-worker,you're in that not enviable position where you can't have no contact-so you must take it one day at the time and trust me,time will heal your wounds.

Meanwhile have as little to do with her as possible.

Good luck!

Since you see her every day, wear you best smile to work, and your most positive attitude, and don't be drawn into personal conversations, and while you are polite and businesslike, you must also keep your best face forward. None of that sappy, unhappy stuff. This may be difficult, but you just have to fake it, until you make it. Eventually, you will get your feelings under control, and rebuild a social life that makes you happy without her.