Thank you for your Question
A person has to have a genuine reason to break away a Nikah. Marriage is a very holy knot which when broken shakes the Throne of Allah. The act of talaq has been legalized for the benefit of both husband and wife, but only if there is a solid reason to back the act. Incase you have a problem that has not been resolved over the year, then you may want to consider some counseling that will help better your relation.
Best of luck