Hindsight is 20/20 (Doha)

For those now living in Doha, they say hindsight is 20/20. As someone who is always trying to learn from others and moving to Doha soon; what do you wish you knew then (before coming to Doha), that you know now? What insight do you wish someone had shared with you before your move. The Good, the bad or some insightful advice. Your time and honesty is appreciated.