How do you get motivated when you feel hurt and forgotten?

Well, you need to forget about being sad. I personally feel this way everyday and I manage to get by. You need to try to do something that you like and makes you happy. If that doesn't help, try to see why she stopped talking to you. If you find out the reason why, then you can probably resolve the problem (if there is one). You can try to also do nice deeds to make you feel better.

i suggest talking to your friend and finding out why she stopped talking to you. she might be going through a tough time or something like that.
and i know how you feel about being quiet, i am too. i was forced to learn to stick up for mysellf a few years ago wen my dad married a woman with three children. and now i find it much easier to speak my mind. just try it, you may find its not as hard as it seems. it always helped me to imagine that its my friend that needs sticking up for instead of me. for the being sad. you realy need to just force yourself to go out and have some fun. do something get out, even if you dont feel like it, you will feel better once you have.

First things first you are not the only one I too am quiet I prefer being on my own. I changed a bit when I went on to further education I was one of the oldest in the class and found the others would listen to me and that in turn brought me out of my shell a bit. I have also found persuing things I like to do even if people think its odd makes me feel better and you meet like minded people and find you have things in common. So may be theres something you like doing and could find others and that could bring you out of your shell. For me its Steam Engines. I love the smell and the history and because its usually a boy thing and I am a girl people usually talk to me. I also think its something that comes with age I am 36 and the older I get the more outgoing I seem to be. Hope this helps.