I should probably clarify a couple of things I said in my opening post.
I don't mean to suggest, as Grisha pointed out, that one consciously repress their desire to be with a partner. My intention was more along the lines of that one remains open to the possibility of a relationship, but doesn't chase after the possibility to the point of it becoming a struggle that detracts from one's happiness.
For me, having to jump all sorts of hoops for a girl I was trying to get to know better, or feeling under pressure to make her laugh, that would kill much of my desire for her because it would feel like a one-way process from my point of view. If she doesn't appear to be interested in me and reacts badly towards my attempts at conversation, I don't particularly feel like pushing myself well out of my comfort zone just to please her. I may find someone desirable, but it has to be a two-way street for me to really feel motivated to chase her a little.
On that note, I also wouldn't go for a girl just because I thought she was more attainable-an "easier catch", if you will. That's not to say I'd turn away any woman who wasn't a model, but I'm not going to try and go after someone I don't feel attracted to.
In other words, the attitude I'm trying to describe is one where one doesn't compromise a reasonable set of standards, but doesn't worry if they don't meet someone who takes them seriously as a potential partner.
I'm talking about choosing to remain happy and fulfilled, while not bitterly dismissing the possibility of love entering one's life. I'm just insisting that any romance I pursue must be one that makes me happier in the pursuit of it-not a vain struggle for the acceptance of a woman who isn't interested.
Besides, a person who fills their life with things they love to do and can excel at, that seems to be to not only be a good way to meet like-minded people of both sexes, but also a better way to boost your confidence than memorising chat-up lines.