Queensland Premier Annastacia Palaszczuk has announced her retirement from politics.

In a press conference on Sunday, Palaszczuk said she would step down next week, and endorsed deputy premier Steven Miles as her successor.

“I have given my all and I have run a marathon. I have fought the good fight and have given everything but now is the time for me to find out what else life has to offer,” she told a press conference on Sunday.

The announcement comes after a series of polls showed her government faced defeat at next year’s state election amid declining personal popularity.

Last month, Palaszczuk insisted she would remain to contest the upcoming election.

Palaszczuk said she decided to resign at last week’s national cabinet meeting.

“I was sitting there thinking, this is the fourth prime minister, there were all these new faces sitting around the cabinet table.

“We got a great deal for Queensland, $4 billion, and I thought to myself, renewal is a good thing,” she said.

Palaszczuk said that Queensland was “in good shape” as she resigned, citing lower unemployment, the Cross River Rail project and the 2032 Olympics as her government’s defining achievements.

“Everything is set up for a bright future … the building blocks are all there. It is up to the next person to make sure that that building continues,” she said.