Sometimes we may be tempted to “start over” on a genealogical problem. It’s hard to do that. You can’t unlearn what you think you have discovered and you can’t just forget the information that’s confused you–or at least the conclusions you came to from that information.
What you can do is go back and double-check each fact or piece of data to see if you made a mistake. You can determine the source of each piece of data (creating a citation while you do it). You can reanalyze something to see you made an incorrect conclusion or inference. You can make a list of your assumptions. You can learn more about the time period, location, culture, applicable laws, etc.
Don’t stress out about going back to “square one.” Start using something besides squares and work from where you are.