Random password access to webpages on Chrome

I recently watch a video which outlined the 20 second rule, the idea is that we can disrupt and eventually break bad habits if we can find ways to create at least a 20 second buffer between when we would like to use it and when we can actually access it. I find myself all the time working on project, running into a bug then just getting on Facebook for half an hour. So, I came up with the idea of creating a program which randomly generates a password to access Facebook, to get the password, you must run python program which prompts for 20 inputs then it will give you the password, it will then reset the password for the next session. I have been thinking about this the past week and looking a chrome extensions and the like but I still have no idea how to go about it. Does anyone have any idea of the starting point or how you would go about it?