Beatriz, wise words
Rediscovering the place thing take in our life is an ongoing never-ending process. It is hard all that is going in our minds into writing… sometimes we are too hard on ourselves, and that leave us kind of paralyzed… you are not alone.
About the Ambassador thing, I understand what you are coming from, but wanted to tell you two things: keep in mind most people should not expect you to be perfect (I mean, nobody is…) in order to reach out to them. With that said your well being is number one to us. 
take the time you need… there will be allways opportunities to help when you are ready.