Every online marketer and writer is on a journey. This journey towards online success and profits often if not always starts off rocky. Its actually a very select few who make it past the rocky start and dont quit due to discouraging returns from their efforts.
Whether you followed bad advice, followed no advice at all or merely have content that outdates the current factors that Search Engines focus on, its near impossible that much of your online portfolio does not contain underperforming work that you have given up on or consider a constant source of of discouragement.
As your online portfolio grow and your knowledge and strategy changes, one should surely go back and revisit that early work and add your new found knowledge to your old attempts