What does Matthew 19:12 mean?

He went on, 'Some people can't marry because they were born that way, some were made that way by others, and some choose not to marry for the sake of God's kingdom. Anyone who can accept this should.' Matthew 19:12 - Modern Text Bible

(Jesus recognizes that singleness can be a calling, whether by circumstance or by choice, especially for those who want to focus on God's work.)