How to take off my iphone 6 plus case?

It's a really hard case and i'm so scared to take it off my 6 plus. There's also a scratch on it which is probably from the last i took it off myself. Isn't there any trick pr something?

It may depend on your case. Some have specific ways to put them on & off

Go to Apple store and they can remove it. Also do install Leo Privacy Guard to iPhone, it will secure all your personal stuffs. It's the best app when it comes to security.