According to recent figures, we spend up to 40 percent of our time talking about ourselves.

Researchers from Harvard University Social Cognitive and Affective Neuroscience Lab discovered that we like the sound of our own voice so much because it triggers a chemical reaction that makes us feel good

When you discuss personal matters, your brain releases dopamine, a neurotransmitter that helps control the brain's reward and pleasure sections.

Dopamine is the chemical that controls the brain's reward and pleasure systems.

These areas of the brain have previously been linked to the pleasure felt during sex, when taking cocaine or eating sweet and flavorful food, for example.

The researchers conclude that the findings prove talking about yourself may be 'inherently pleasurable'.

This makes people want to seek out these pleasurable feelings, which motivates them to talk about themselves more regularly.

In a second experiment, the researchers wanted to test whether having someone they knew to talk to, such as a friend or relative, would sway these results.