We cannot always control our thoughts, but we can control our words, and repetitionimpresses the subconscious, and we are then master of the situation.
You only have power over people so long as you don't takeeverything away from them. But when you've robbed a man of everything he's nolonger in your power he's free again.
Believing that soom good can be derived from every event is a better preposition than that everything happens for the best, which is assuredly does not.