How to become one with yourself<br>Do some positive thinking. A person who is a negative thinker is lead towards trying to be somebody else. This may be because they want to impress their friends or because they don't see purpose in themselves.
Lack of purpose can lead to a lack of authenticity.
This definitely correct as the context implies that not seeing a purpose in oneself is related to trying to be someone else. The system may not have made this connection because of the way this relayed in the context. 
( z1 possible :ARG1 ( z2 lead :ARG0 ( z3 lack :ARG1 ( z4 purpose ) ) :ARG2 ( z5 lack :ARG1 ( z6 authenticity ) ) ) )