[meraku]

Most important takeaway about salary negotiation, by the way: disclosing a previous salary is almost always against your interests because it pegs your new salary to that plus 5% rather than your value to the new firm minus a discount, which is a brutal mistake

Completely agree with this, though I made a mistake that was even worse than this. A friend hired me a couple of years ago to join his small company as the first developer, during which I disclosed my salary and also mentioned that I was willing to take a pay cut (as I wasn't happy where I was, and he was a tiny company still finding his footing). Fortunately, he matched my salary, so I didn't end up making less money as such, though it also didn't take into account of the value that I brought to the business, being the only developer on the team.

As a result, it certainly feels like I've sabotaged myself, where I should be making more than I am, with the only solution being to find better compensated employment elsewhere despite being reasonably with my current role.