Obviously I don't know your personal circumstances, but if what is holding you back from the promotion or pay rise you deserve is needing to increase your self-belief, your confidence, clear Imposter Syndrome, and take your visibility up a few notches so you'll be top-of-mind, then the answer is yes.
When I ran the 2019 Imposter Syndrome Research Study, I found that Imposter Syndrome was one of three hidden causes of the gender pay gap and lack of gender parity in leadership roles. This also applies to BAME equality and other groups who feel they are in a minority in their company.
The research study showed that clearing Imposter Syndrome helped women, in particular, to advance in their career.
Also, the more you believe in yourself, the more likely you are to succeed in asking for a pay rise!
Taming Your Inner Critic lays firm foundations for the rest of the Ditching Imposter Syndrome work that you could then do in Stepping Up To Lead, if you decide to continue with the programme.