(idiomatic) make the same mistake that someone else did

to step on; to tread on; to walk on

ignore, disregard

dissatisfaction, discontent, disapproval

not serious, nonchalant, trivial

lack of seriousness

To stamp (flat/hard), to tread.

unstable: anxious because of the inability to get what one wants

instability: the state of anxiety caused by the inability to get what one wants

unstable: anxious because of the inability to get what one wants