Anxiety is a state, not a feeling. It is an agitated state that one enters when one feels threatened. Usually the threat is either an external threat, or stemming from an internal conflict.
Once you can feel fear instead of anxiety, allowing yourself the full felt experience of fear, without giving in to letting it rule your actions, you will be through the anxious state. At times the anxiety is a sign that you actually need to activate more, do more and allow the nervous energy to be directed into a meaningful or productive activity. When there is something we need to be doing, and we are not doing it, we can become very anxious about it. Perhaps some encouragement and tools to booster confidence would be enough to overcome it.