I'm wondering how you should go about killing imposter syndrome.
For background - I grew up poor and graduated during the beginning of the recession from college (so the idea of higher sums of money seems unfathomable to me). I've got several years (4ish) dev experience and I'm pretty decent at the job. A lot of brand new (software) devs are making 60-80k in my area, and I'm currently working a job where I make less than 50k a year. I'm at about the 13th percentile or less for my position.
How do you convince yourself you're worth more than you're currently paid? I've even gotten tentative offers where the minimum was almost a doubling of my current salary, and yet I still feel like I don't deserve it or I couldn't handle that job even though I'm more than qualified.
How can this be overcome?