I just read an interesting article about when to stop trading live and go back to demo trading.
Go to demo when you have lost 9% of your account.  Trade on the demo account one week for every 2% of your account that you lost.  We all know that it is better to have some money to come back to when you start to trade live again.
There is more to the article but this is what struck me as being of up most importance.  It gives us a set point at which to stop trading live.  There is no guessing it is straight forward.
Once you have figured out what you have done wrong by going back to basics, you can start trading live again.  I thought this would be a good simple straight forward approach on how to get you back in the game.
I think you could even set the loss % to maybe 5% when you are first learning and have just started to trade live.  It is better to protect your capital rather than have to save up again.  Be cautious and conservative and you will be around as a trader long enough to become successful.