Lose the control... Fear of loss of control underlies all phobias, most anxiety or panic attacks, and limits one's potential as an ever-evolving human being. Learn relaxation technique that works for you that blocks the primitive 'flight respon'', then let rational win over irrational. Flying: the pilot will get u there. Bridges: it will hold up your car. Talking in front of audience: picture them naked. Lose & live.
Get in therapy... Talk therapy can be so helpful with such anxiety feelings... No need to suffer alone another day! Find a good therapist asap; you'll be glad you did.