let alone

While those who struggle financially have an even steeper climb to achieve emotional wellbeing, we are all constantly encouraged to find new paths to self-improvement. There is always a new diet to follow or old vice to quit, a treatment to try or a flaw to fix. We are asked to expand our self-knowledge, show greater authenticity, and flourish. As part of this ongoing project of the self, we are invited to enquire if we’re assertive enough, communicative enough and sensitive enough. If we’re getting enough from our partners, let alone from ourselves.

Aguas Claras said:

It reads a bit strangely but it is a continuation of the previous sentence: "we are invited to enquire if we're assertive enough ...; if we're getting enough from our partners, let alone ourselves.

I think "let alone" is intended to mean "not to mention" here. But, if that is the case (I'm really not sure), I don't find it a very appropriate use. "Let alone" is usually used at the end of a negative sentence to express something that is even less likely than something else, e.g. "he can't even organise his own life, let alone run a business" or "a cat couldn't fit in that space, let alone a person".