We always think our negative emotions are produced by the fault of other people or by the fault of circumstances. We always think that. Our negative emotions are in ourselves and are produced by ourselves. There is absolutely not a single unavoidable reason why somebody else's action or some circumstance should produce a negative emotion in me. It is only my weakness. No negative emotion can be produced by external causes if we do not want it. We have negative emotions because we permit them, justify them, explain them by external causes, and in this way we do not struggle with them.