The more you focus on yourself, the easier it will be to move on with your life.
This is so classic that It may turn into a proverb.
The real challenge is when you actually do see her to deal ( I won't say forget) those feelings that you have for her.
Yeah, that's the point if I really move on with my life. I used to console and control myself by reading an article that I wrote and carried it with me that days. The following is its content.
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When I miss her, it’s not wise to argue with my mind although that intervenes with my action. What I can do then is definitely not to force me not to think about her. I know it’s futile and I will be anxious, thus this will ruin my mood and break my plan full enough. However if I relax myself by recalling the time we used to spend together. Then I begin to smile. And this good feeling is strengthened as long as I console myself with some considerations:
1. We are not lovers, and she is seeing another guy. It’s ok because she is happy now. I will be happy as long as she is happy.
2. I can still ask her out. She almost agreed. We are friends and we still have a ball when we play together. That’s fantastic.
3. We don’t know each other well. Maybe we don’t match. Couples who married or not, who get along for a long time or not could end in departing. So, maybe it is good time for me to calm down, to think through it.
4. This is a hardship for me now. But, it’s also a good time for me to improve myself, to promote my personality. If I weaken my shortages and became a capable, successful, confident, impressive man, what could I lose? Then she may like me.
5. If it’s been proved that my crush on her is a one-sided love, she would suffer more loss than me. As for her, she rejects a guy who cares her more than other guys do; for me, I just lose a girl who doesn’t care me. She will regret in future, but I won’t.
Then I can insinuate something else into missing her gently, and gradually I won’t study halfheartedly.
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Now, I never call her for sports or something like. We descend into strangers except that we say Hi to each other if the unavoidable situations happen. As for my feelings for her, I just hide it and don't think about it by keeping myself busy!
Once you are able to stand in front of her and be strong enough to let her go along with those feelings, then you know you have accomplished what you set out to do, and use it as a lesson for the future also if you should run into this situation again with any other woman.
I guess if we could hang out some day, I would achieve what you mean.