I want help to overcome social anxiety

My hands tremble while eating when being watched, or acting while being watched. I've tried several times to think positively, take the deep breaths but nothing seems to work. I feel so tired of people noticing that I tremble while eating, I can't even go out on a date with the man I love, because I'll end up trembling before everyone to embarrass him. I am so tired of it, what should I do, please help me