Being Nationalist is good thing. There is nothing wrong being Nationalist. You should be proud of who you are and hwhere you come from.
BUT, being "**Hyper Nationalist**", "**Radical believer**" should be avoided and neglected. These things can create riot and quick war!
If you love your nation, you are just helping yourself in many ways, the first and primary most being you are not complaining about anything your country offer or don't offer.