This will sound all too familiar for people who always seem to be chasing things they can't have. It might be a dream job, or it could be a person either way, when something is out of reach, they want it that much more.
You might have started dating someone, and thought things were going well. You were attracted to each other, and you were under every impression things were progressing in the right direction. Then they started to pull away, and instead of letting them go, you started bombarding them with messages and calls.
You could feel them slipping further away, but you couldn't control that burning desire to fix whatever went wrong. Predictably, the more they distance themselves, the more you chase them, until eventually they're gone for good.
We place more perceived value on people who are busy
Erika Ettin, the founder of dating website A Little Nudge, has a theory for why we behave this way.
"The less someone responds or reciprocates to one's advances, the more perceived value the pursuer thinks this person has," she said. "So we try harder since this person must really be 'worth it' if he or she is in such high demand in other words, this person is a scarce resource."
If someone is busy, our minds can go into overdrive thinking they must be spending time with other people. They're obviously popular, so something primal in our brain can make us think they are more valuable than they really are.
In fact, Ettin said that often this means we start to place more value on the other person than we do ourselves. But if someone isn't being honest with you, she said, they simply aren't worth your time,
"This person's lack of response, though, should not imply a higher value," she said. "Rather, at its simplest, it should imply a lack of proper communication... or just rudeness."
Unfortunately, walking away is much easier said than done. When we like someone, our brain will release the hormone dopamine when they appear in our messages, or ask to see us.
We can get hooked on this happy hormone, and start chasing the high, like a drug. If we get intermittent attention from someone, it's all the more addictive than if we got it all the time.
We are susceptible to 'breadcrumbing'
"Our brains love the unpredictability because the highs are higher than if we got the desired reward all the time," Ettin said. "This is why breadcrumbing has sadly entered our lexicon recently."
Breadcrumbing is when someone texts or calls on a sporadic basis, normally because they know you will respond. They will seem to be pursuing you, but in reality have no intention of being tied down to a relationship. They just like leaving you breadcrumbs, like a trail in Hansel and Gretel, to string you along.
Thanks to the dopamine, we let people treat us this way, because the reward feels so good on the rare occasions we get it.
"With the extra dopamine, though, comes added anxiety," she said. "'When is he going to text?' 'I haven't heard from her in three days, and I know she's back from her weekend trip by now.' 'If he wants to go out this weekend, he needs to ask since it's already Friday afternoon.' Is that a worthwhile trade-off? I say no."
It can be incredibly tempting to fall for the thrill of the chase, particularly because our vanity can drive us to keep pursuing someone who just isn't interested. But if you can pull yourself away, and devote your time and energy to what you do have rather than what you dont, you're likely to save yourself a lot of heartache in the end.