If you are not happy with your married life, it’s better to dissolve it instead of dragging it along. You can take / give a divorce to your partner, after stating the grounds for the same.
As one of you asked me, there is no age limit to go for divorce. The oldest of the cases I’ve come across is that of Mr. J.M. Kohli, who got his divorce at the age of 80 ! Though he had applied for divorce in 1982, it’s almost close to 30 years and now he got the verdict (isn’t justice delayed, justice denied ??).
There will be a lot of similar cases which you can easily find online, if you start digging around, I just quoted one which I had come across.