Analysis of I Must Be

I must be all I can be, nothing too meek or vain.
I must free all I can free if I would free remain.
I must heal all I can heal, nothing too poor or dear.
I must feel all I can feel if I would feel sincere.
I must fight all I can fight, nothing too vile or fine.
I must right all I can right if I would right assign.
I must give all I can give, nothing too small or great.
I must live all I can live if I would live my fate.
I must sway all I can sway, nothing to soft or tough.
I must pray all I can pray if I would pray enough.
I must raise all I can raise, nothing too plain or blind.
I must praise all I can praise if I would praise mankind.
I must be all I can be, nothing too much or less.
I must see all I can see if I would see success.