When we feel thankful, our thoughts are enveloped in joy. Endorphins and other feel-good hormones rule. It’s actually good for our health to be in a state of gratitude. But, again, the mind is negatively biased. It naturally moves towards “what’s wrong with this picture?” and revisits past hurts. So we have to train it or it will follow the path of least resistance—its natural tendency to fear and find fault.
Soft, flabby muscles are the result of sitting around doing nothing. Training the muscles through beneficial activity can whip them into shape and produce strength and beauty. The brain follows the same principles. If you just let it pursue its negative bias, you will never be happy. Ever. But if you look around you and find even one thing you can be grateful for, you have just changed your inner climate and can be happy, no matter what the outer circumstances.