Correct

主心骨

/ zhǔxīngǔ /
Strokes

Definition

backbone/mainstay/pillar/definite view/one's own judgment

Example

As a Noun

backbone; mainstay; pillar

1
qīn
母亲
hòu
  
,
jiā
家里
méi
le
zhǔxīn
主心骨
  

The family lost its mainstay after the death of the mother.

As a Noun

(definite) view of one's own; one's own judgement

2
Shìqing
事情
láide
来得
tài
rán
突然
  
,
shíjiān
时间
méi
le
zhǔxīn
主心骨
  

For quite some time I had no idea what to do because it had struck all of a sudden.

Related

主心骨