I can't afford it' shut down your brain. it didn't have to think anymore. besides, it also brings up sadness. a helplessness that leads to despondency and often depression. 'How can I afford it?' opened up the brain. forced it to think and search fro answers. it also opens up possibilities, excitement and dreams and created a stronger mind and dynamic spirit.
Robert Kiyosaki,
Rich Dad Poor Dad: What the Rich Teach Their Kids about Moneythat the Poor and the Middle Class Do Not!
Rich Dad, Poor Dad by Robert T. Kiyosaki