You don't choose what you believe moment to moment, but choices you have made do shape what you come to believe.
No genuine choice is ever simply a matter of the arbitrary exercise of will. Take your choice of lunch today. You can't decide to want anything, but what you want will at least in part be a result of a series of other choices and judgments you've made in your life to date.
Cooking can be rewarding when it is a choice and no longer the onerous duty of the housewife, and when a dishwasher can lighten the load at the other end of the process.
The capacity to make free choices is not something we either have entirely or not at all. Rather, choices become freer the more they are the result of our own capacity to reflect on and assess facts and arguments.