Since others are sharing their doom and gloom stories - Mine is the opposite. I was hired at a startup, and I didn't even know what a startup was. I just liked the industry they were in and applied to join.
In negotiations I tried to get more salary, by taking less equity. It kinda worked, but later they doubled my equity to match other hires of the same era (but with a new vesting schedule for the new options). Then at some point I was fired without reason. The company went on to become worth a lot, and I was able to get out with enough to never work again and live pretty luxuriously. AFAIK others that were in my era at this startup did equally well, or many times better. It can happen, but I didn't ever think it was even possible because I didn't understand what 'options' even were when I was hired.
In negotiations I tried to get more salary, by taking less equity. It kinda worked, but later they doubled my equity to match other hires of the same era (but with a new vesting schedule for the new options). Then at some point I was fired without reason. The company went on to become worth a lot, and I was able to get out with enough to never work again and live pretty luxuriously. AFAIK others that were in my era at this startup did equally well, or many times better. It can happen, but I didn't ever think it was even possible because I didn't understand what 'options' even were when I was hired.