Well I have also found that positive selftalk also helps a great deal! And one thing I always repeat to myself is "I will not let little anxious behavior overpower me" If I start to pick at my nails or skin or start picking up on behavioral traits like lip biting..I quietly tell myself to stop letting myself behave anxiously because the more you indulge in those little behaviors the easier it is to start falling into an anxious pattern of behaviour...your brain will start to follow suit once you start telling yourself that "acting anxious means becoming more anxious" if you know what I mean.

Hope this helps x