What are you lacking?
You don't have enough push.
There is not nearly enough―(は量、数なら)―There are not nearly enough.
とるに足りないもの
物足りないこと
the condition of being unsatisfied
とるに足りないこと
とるに足りないさま
とげが不足する
We are short of hands―short-handed.
まだ足りない?
取るに足りないもの
something of small importance
取るに足りないこと