1. This sentence comes from "English Famous Words about Frustration".

2. it means:

People will suffer after suffering. People have to go through some hardships to become talents.

The original sentence is like this, as if a word was omitted after "become". Another example is:

1) Suffering tempered some people and destroyed others.

Temper the suffering of some people and destroy others.

2) Suffering is the teacher of life. After suffering, we can move towards happiness.

Suffering is the teacher of life and leads to happiness through suffering.

These are proverbs, and it is normal for sentences to be incomplete.