Self talk helps me a lot. Your anxiety represents an irrational side of your thought process. Listen to those thoughts, but then let your rational mind respond. For instance, you mention that you've been really anxious lately, but then say you guess it's your new job. Have that conversation in your head. Hear the irrational part express worry, but then use the rational side to respond. Same thing with the twitches. Just keep the conversation going. It might take time, but it's a good habit to develop.