If you can't recover your Steemit password, my best piece of advice would be to power down this account and withdraw all of your STEEM tokens. Create a new Steemit account, move the STEEM tokens to the new account and power that account up with them. I hope that you don't need to do this, but if you really have lost the password, then you have pretty much lost your account already and this is all you can do to recover any of the work you have put into it.

Obviously if you do need to make a new account, write down the password, probably a couple of times and store it in different places.