Every doubt must be endured and overwhelmingly overcome, otherwise it is like "A thousand-mile dyke is destroyed by an ant hole."
The collapse of faith often originates from the shaking of theories and beliefs, and this shaking comes from doubt; half-belief and half-doubt are the root of all ineffectiveness. Before enduring, the inner turmoil can be significant, but after enduring, you will feel that the trends in the market are truly repetitive in a regular pattern.