Many skills and life patterns, which are key components for self-sufficiency, are formed during this period.
( ( ( ( ( Many ( skills ( and ( life patterns ) ) ) ) , ) ( which ( are ( ( key components ) ( for self-sufficiency ) ) ) ) ) , ) ( ( are ( formed ( during ( this period ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Many) (NNS skills) (CC and) (NN life) (NNS patterns)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (NP (NP (JJ key) (NNS components)) (PP (IN for) (NP (NN self-sufficiency))))))) (, ,)) (VP (VBP are) (VP (VBN formed) (PP (IN during) (NP (DT this) (NN period))))) (. .)))
People never develop self-sufficiency in their lifetime. 
( People ( never ( ( develop ( self-sufficiency ( in ( their lifetime ) ) ) ) . ) ) )
(ROOT (S (NP (NNS People)) (ADVP (RB never)) (VP (VBP develop) (NP (NP (NN self-sufficiency)) (PP (IN in) (NP (PRP$ their) (NN lifetime))))) (. .)))