I didn't find my life on the street. (They ask me to do something dangerous)
... ... I'm not sure what this means, but:
Life on the street is no place to be.
I was defeated by my emotions. (I acted with my emotions)
... ... I was overcome with emotion. (I couldn't stop crying)
... ... I let my emotions get the best of me. (I let my anger get out of control)
I was defeated by my excitement. (I was excited and I failed something)
... ... My excitement got the best of me, and I wasn't able to ...
... ... I got too excited and so I wasn't able to ...