I think it's a question you can ask yourself.
Ask yourself:
Do i want a girlfriend?
Yes, then what is holding me back?
Myself? Work? Environment? Etc...
then ask yourself why is it holding me back.
Try to go to as many public places as possible even if it's the
train/bus or mall.
just being there make your chances grow.
I agree with Glenn...ask yourself what's holding yourself
back...the answer is in front of you...