回过头来

1. • to turn one's head to turn around
2. • to return (to a previous point) to come back (to what one was saying before)

     fig.

3. • to look back (in time) to reflect on the past

     fig.

Character by character

• 回(huí)go back
• 过(guò)cross
• 头(tóu)head
• 来(lái)come