What does it mean to wake up before drinking coffee and tidy yourself up when the weather is cloudy?

The sentence "Be sober before drinking coffee, and clear up when the weather is cloudy" expresses a positive attitude towards life, that is, always stay awake and happy, not affected by the external environment. At the same time, it is also a way of self-motivation, reminding people not to give up easily in the face of difficulties or challenges, but to remain optimistic and firm.