sounds whiny and defensive , as if his life-altering experiences made him bitter and less mature 
(ROOT (VP (VBZ sounds) (ADJP (JJ whiny) (CC and) (JJ defensive)) (, ,) (SBAR (IN as) (IN if) (S (NP (PRP$ his) (ADJP (NN life) (HYPH -) (VBG altering)) (NNS experiences)) (VP (VBD made) (S (NP (PRP him)) (ADJP (ADJP (JJ bitter)) (CC and) (ADJP (RBR less) (JJ mature)))))))))
(ROOT (VP (VBZ ) (ADJP (JJ ) (CC ) (JJ )) (, ) (SBAR (IN ) (IN ) (S (NP (PRP$ ) (ADJP (NN ) (HYPH ) (VBG )) (NNS )) (VP (VBD ) (S (NP (PRP )) (ADJP (ADJP (JJ )) (CC ) (ADJP (RBR ) (JJ )))))))))