One meaning of this could be the way I sometimes beat myself up over things I should be doing. Instead of focusing on what I have not done, just get busy doing something good. Put in my best effort. Ensure that I am not overextending. When the day is done, be satisfied with what I have accomplished.
In Joseph Wirthlin's final sermon, "Come What May and Love It", he talks about not taking ourselves too seriously. Laugh about the antics of my life.
My life is designed perfectly by Father in Heaven and myself. Each day I can chose to be happy and then get to work. I can choose to despise the shame of the world by doing my best, keeping balance in my life with play and exercise and rest. That is a much better choice than defeating myself in my own head.
Power comes when we exercise our faith in Jesus Christ. For me, that sometimes means trusting that we will save me from even my lack of faith. There was a man who brought his child to Jesus to be healed.
Jesus said unto him, If thou canst believe, all things are possible to him that believeth. And straightway the father of the child cried out, and said with tears, Lord, I believe; help thou mine unbelief. (Mark 9:23-24 emphasis added)"You will be strong enough, if you believe in Love"