At what age in the state of Texas can a child choose on there own to live with the other parent or gaurdian??

At what age in the state of Texas can a child choose on there own to live with the other parent or gaurdian??
Age 18. A child NEVER gets to choose. Once a child reaches a certain age (usually 12 or 13) the judge may take into consideration the child's wishes, but the judge make the decision. That decision is based on a number of factors.