1, frustration will dampen self-confidence, and in extreme cases, it will lead to suicide and the end of life (if the other party says that frustration makes people mature ...)
2. Frustration means losing opportunities.
3, setbacks, but also smooth the vicissitudes of life, is a waste of time.
4, setbacks, leaving a personal historical stain (if the other party says setbacks make people mature ...)
5. Frustration means failure, which affects the public impression.
Invincible, must be thrown at a critical time, so that the other side is unable to fight back.
I wish you success!