Prosperity is very liable to bring pride among the other goods with which it endows an individual; it is then that prosperity costs too dear.

Getting what you wanted tends to arrive with a passenger: the quiet assumption that you deserved it and others did not. Pride comes in as one more gift and is the only one that takes something away, usually your patience with people who are still struggling. The cost is hidden because nothing visibly goes wrong; you simply become harder company and slower to learn.

If something has gone well for you lately, watch how you talk about people who have not had that luck. Any sentence that explains their situation by their character is worth stopping mid-way and rethinking.