Oh, that does not matter much. The fact that it does not matter much to you may mean that it matters a very great deal to God. Nothing is a light matter with a child of God. He never loses patience. Whenever there is doubt, quit immediately, no matter what it is.
Nothing is a mere detail.
You no more need a holiday from spiritual concentration than your heart needs a holiday from beating. You cannot have a moral holiday and remain moral, nor can you have a spiritual holiday and remain spiritual. God wants you to be entirely His, and this means that you have to watch to keep yourself fit. It takes a tremendous amount of time.