I think what's more important is to take this information and use it to build healthier and more empathetic habits. It takes guts to dissect yourself like this and admit to these traits.

"Selfish" is such a strong and negative word so I wouldn't go there. I'd focus more on your quality of life, instead. It sounds to me like the root is more to do with an insecurity, and to discover this at such a young age, well done! There's definite hope.

What made you suddenly aware? Why does it bother you -- or does it? What are you hoping to achieve from this knowledge?