This may seem contradictory, but Paul was talking about two different things. We need to carry smaller loads (like a backpack) ourselves, each one being responsible for themselves. But as we walk together, a community of unfinished people being equipped to share the hope of Jesus in a broken world, part of our disciplemaking is to help care for one another by bearing burdens (like boulders) that are too big to carry alone. These resources can help when walking with burdens.