Set your thoughts to thinking about thought. Seek spiritual cause for each effect you see in your life. Look for consistent principle, impersonal law, acting through your mind. We would be benefitted by seeing prayer in a new way. Rather than seeing prayer as a certain quantity of thought, we could see prayer as we see infinity or perfection, as a quality.
Every thought contains the quality of prayer, because it reforms our thinking process itself.
If we recognize that the spiritual laws work from within us, it would make sense to take our attention inward to the point where those laws begin, to see and use the laws at their source. This is prayer. If we acknowledge and accept the operation of law, we strengthen and accelerate its effect in our lives. This is because we apply the same law consistently, without changing direction. This is prayer.