Excited or Anxious

This is another planned meeting in which I chose 2 distinct emotions, and Jerry, a group regular, will share some related to what I've chosen. Jerry will share his part at the beginning of the meeting. The first trial (so to speak) of this was in December titled Satisfaction and Jealousy. Now, it's excited and anxious:

Is excitement in itself the same thing as "anxiety"? Are they the same and yet interpreted as if 2 distinct experiences?
Is excitement a reliable emotion to aim for? Is being "anxious" to some extent a positive?