In the first stanza the person is saying how they feel trapped. This means that they might not be given the chance to use their skills and are denied.
In this stanza I think that the person is trying to start using their skills and going out in the open to explore and try to be free.
I think stanza means that the person is trying to break free. The thing they are trying to break free from is the barrier that has been holding them in and not letting them go to their full potential. Once they break past that barrier they are happy and are having fun.