Many people chase pleasure instead of happiness because they are not clear on the difference. Happiness is an inner state of contentment, fulfillment, and satisfaction that survives over time while pleasure comes from outside stimuli and makes you feel good in the moment. Happiness comes from feeling confident about our choices and our effort, while pleasure comes from getting more money, playing xBox, or eating a good meal. Pleasure can add to our happiness but it has strings attached: too much pleasure can also take away from happiness rather than add to it. Think of a chocolate cake sitting on your table. You can have a small slice or you can eat the whole cake. A small slice gives you pleasure which adds to your happiness. It also makes you happy because you exercised self-control and you will feel good about your decision tomorrow when you still fit into your new cloths. If you ate the whole cake, you get a jolt of pleasure. But that will fade quickly after the sugar high and will result in you feeling bad about yourself, your decisions, and your potential for fitting into those new clothes. What really makes you happy vs. what just brings you temporary pleasure? Define the actions that bring you contentment, satisfaction, and fulfillment and focus on those.
Define happiness so you can choose actions that will make you happier in the long term vs. just provide you a little pleasure in the short term.