This vacillating between opinions sounds a little wishy-washy I know. But there is a reason for it. Concentrating on world affairs and forming judgements and opinions about them, especially in terms of how one lives one's life, can really serve to tense up one's faculties of perception, at least for me. Like a hand gripping a lever, applying mechanical pressure, the joints start to ache, the muscles start to burn. One's opinion and judgement emanates from one's self, and reaches into the movements of the outer world: conclusions start to take on an existential quality; they must be right! There is a moral significance to what must happen, in accordance with those elusive natural laws. Living in an unstable world, bad judgements could serve not just as an embarrassment to one's ego, but as negative effects on one's very life.
But there is a self-defeating quality to this heightened significance. To attach too tightly to one's opinions is to hitch one's fate to the movement of the opinions themselves, which don't always align with the reality, especially as one's ego runs away with itself. One's perception about what is possible constricts. One misses things. One may eventually go down with one's own faulty perceptions in turn.
I find it useful to regularly loosen up the grip and stretch out the perceptions; build up a little flexibility. If one is going to think hard, then think hard about all of the many possibilities and ways of doing things also. Yes we're going to do some work here, and apply some force and grip. But let's do it limbered up.
