Like everything else on the path to mastery, gratitude is a choice. You can choose to wait for some meaningfully pleasant situation to arise and then feel gratitude in response,or you can choose to be grateful at all time, in all circumstances, and watch as the world conspires to assist you in your path. Unknown
Whatever the the mind can conceive and believe it can achieve. There is nothing capricious in nature,But implanting of an idea is an indication that it's gratification is within the constitution of the creature which thinks and feels it.