Hi,
There's this girl from work that i dated once and i tried to hit on later, but i got a "no" from her.

The thing is, i still want her, pretty bad. Whenever she's at work my emotions are at higher levels and this affects me badly. Of course i'm trying to stay away from her which helps a little but not enough.

Is there a way to overcome this, besides switching jobs or dating other girls?

Yep, oneitis sucks.

Overcome it by dating others and forget about her.

She doesn't sound interested, but if she is, the jealousy may help...

Usually there isn't and I suspect you already know this to be the case. Generally the ONLY way she will ever gain interest or show interest is for you to go out and lead your life and meet more girls and she sees on the fun she is missing out on.

One time I had a similar situation before I knew about game. Asked a co-worker out, she accepted, and then flaked. I started living life and not giving a fuck around her. Somehow, she ended up asking me out.

The main thing is, the moment you engage more women and broaden the circle of women in your life, this girl will diminish in importance.

Don't underestimate the power of ABUNDANCE.

I absolutely 100% promise you that many, many, many of the problems you have with women will disappear into the wind if you go out and constantly meet and date new women on a regular basis.

First of all, don't shit where you eat. That's a common expression that generally means, "Don't fuck women you work with." Too much potential for drama there. Worst comes to worst, you could lose your job and end up with a sexual harassment lawsuit on your hands.

I know the idea of meeting your women all by yourself might be scary. I know you like the idea of hitting on women you work with because you've been handed permission by a higher power (your workplace) to interact with her. You have a safety blanket there. Well, fuck your safety blanket.

Actually, there's a way to feel "safe" when approaching new, random women. You feel safe talking to coworkers because the context of the situation grants you something to talk about without getting rejected, right? There's a way to do this same thing with random women on the street. It's called an indirect approach.

Granted, I'm not a fan of indirect approaches. Using any safety blanket to intentionally hide your true interest is a total cop-out in my book, and doing so pushes you further and further into your comfort zone until you're too atrophied and crippled to crawl out. However, if it gets you results for now, try it out. Starting out with ANYTHING is a hell of a lot better than oneitising all over your coworker who already rejected you.