Were you the kind of kid who insisted on always getting his way? Well, then you'd better start celebrating because you're going to have a successful career and lots of money.

A study, published in the journal Developmental Psychology in September last year, says that strong-willed kids go on to become educational over-achievers and high-earning adults.

The study noted the personality traits of over 700 kids, aged between 8-12 years in the 1960s-70s. They listed the children's sense of entitlement, studiousness according to teachers, defiance against their parents, and tendency to break the rules.

Source: Littleheartsbooks.com

After 40 years, the researchers checked back to see how the kids had turned out. Guess which kids earned higher salaries? The ones who broke the rules and defied their parents.

The study doesn’t explain why there is such a strong correlation between rule-breaking youngsters and high income in mid-life, reports Time magazine.

But, here are some reasons the researchers speculate why stubborn children do well in later life.

1. Tenacious children might be more competitive in the classroom, as well as in life, leading to better grades and jobs. They go after what they want at any cost.

2. They might be more determined and demanding as adults. When locked in salary negotiations, they will not only probably demand more, but also refuse to back down unless they get their way.

3. Persistent adults may be more willing to fight for their own financial interests, even at the risk of annoying friends and colleagues.

4. Stubborn children have strong gut reactions, and they're willing to take on battles even when the world tells them that they're being illogical. They are also more willing to do what’s right, rather than follow their peers.

5. Strong-willed kids are more independent as they're always wanting to do things on their own. This also helps them develop a strong sense of self-worth.

Of course, the authors of the study say that they can’t rule out negative reasons too. For instance, some of the young rule-breakers may be doing something unethical as adults to earn more money.

So, the next time someone calls you an obstinate a*****e, embrace it, because you're going to be rich!