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))))) (. .)))
Self sufficiency requires a tremendous amount of skills and life patterns. 
( Self ( sufficiency ( ( requires ( ( a ( tremendous amount ) ) ( of ( skills ( and ( life patterns ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NNP Self)) (ADVP (RB sufficiency)) (VP (VBZ requires) (NP (NP (DT a) (JJ tremendous) (NN amount)) (PP (IN of) (NP (NNS skills) (CC and) (NN life) (NNS patterns))))) (. .)))