A bridle is used to restrain a horse, so if you dream about a bridle it can be a sign that you wish to control your primitive, animalistic instincts and desires. You could be worried that losing control over your animal instincts will have negative consequences.
A dream that you are wearing a bridle means that you are feeling too restrained and that you are unable to express yourself fully.
Taking off a bridle in a dream represents relieving yourself of responsibility.
If you dream that you are hitched to something with a bridle, your dreaming mind is sending you a message that you need to be more focused in order to achieve a goal.