The simplest advice is this: Interview, A LOT, take some time every week/month and schedule several interviews. After the 10th interview you'll have a very good

The simplest advice is this: Interview, A LOT, take some time every week/month and schedule several interviews. After the 10th interview you'll have a very good valuation of your worth. This is what I believe OP's biggest mistake is - had he interviewed more earlier, he could have gotten to $120K within a year most likely. He _was_ the guy making $75K back then.