Knowing Jesus is far more important than doing for Jesus. The problem is that doing for God is often more fun than knowing God. It allows us to see ourselves in action, to feel important and valuable. Like Martha, doing can distract us from the only thing that matters.
Jesus said "I am the door" Jn10:9- He provides us with sustenance, nourishment & rest. He is our salvation, safety & security. What more do I need to live an abundant life?