Sometimes, we take on too much. When this happens, nothing gets done well and you may end up creating more of a mess to clean up afterward. Don't take on too much. Don't overwhelm yourself with projects and tasks. Take on what you can handle and nothing more. Know your limitations.
This is not an excuse to dismiss things that challenge you... on the contrary. We always want to leave room (time) for those items. That's where we grow. But sometimes we' can become so burdened with meaningless "stuff" that we miss out on what's really important. Or worse, neglect our true commitments and obligations.
Remember, first things first.