The meaning of this sentence is as follows:

1. Life emotions: Life is like a blues dream expresses the emotional understanding of life. Life is complex and changing, just like blues music, full of deep, melancholic and lyrical emotions.

2. Enjoy life: Life is like a blues dream expresses that life is like a dream. People need to cherish every day and enjoy the beauty of life.

3. Optimistic attitude: Life is like a blues dream expresses that despite setbacks and difficulties in life, people need to maintain an optimistic and positive attitude.