How can one improve their physical condition? It still boils down to elevating one's ideological awareness. In truth, some jobs aren't as exhausting as one might imagine, and the capacity for endurance gradually increases.
Everyone has a limit, and after surpassing this limit, one will feel exceptionally good, earning a considerable amount of wealth in society.
This limit depends on oneself, not society.
If one doesn't reach this limit, life can be quite difficult, and this too is determined by oneself, not society.
If life is not going well, blame yourself. Generally, failure to break through that point is caused by cowardice and weakness, these traits breed laziness.
Life can be extremely joyful; it's all about breaking through that point.
Ma Lin is attempting to become more courageous and proactive by being more diligent, thereby overcoming difficulties.