First: quiet and calm. In many cases, the mobility is recovered. The Internet is a bad ally for all the sick people for almost always find negative stories, and in this case the majority with with a happy ending. during the early stages is to do exercises of meditation or relaxation that allow you to evade an ongoing concern.
Second: go to the doctor. Peripheral facial paralysis or Bell's is a disease much more common than you may think. Go to the doctor and that will put a treatment.
Third: downplays the impact. Bell's palsy only involves a slight change of appearance. It is normal that it is traumatic at first, but should not be any impediment to leading a very normal life, much less to be happy.