We can be totally sincere and still do real damage to others — that’s what fanaticism is. Sincerity and integrity are not necessarily equals.
Tunnel vision is actually a complex. When we act out of a complex we think we already know what’s going on, so we react to whatever happens in the same old way. In fact, we can’t see anything else happening but what we already ‘think’ is happening, because we simply can’t pay attention to things which don’t fit into our complex. Tunnel vision produces distortions. It demands selective inattention.
And it tends to get hysterical when opposites or oppositions appear.
We don’t have to go around nurturing that terrible separateness and woundedness, overreacting to everything: opposite opinions, our past, our parents, or even our present.
We could choose to operate from an easier, more productive place where they allow at least two sides to every issue. We could make a game out of it. Pin the tail on the complex, maybe.