Suppose you got 10,000$ in your account without doing anything, how do you feel; obviously happy, but are you sure you will be happy for the rest of your life or will it solve all of your problems? this question might put you in a dilemma, you can't be sure that you will be happy after getting so much money. It is because somehow deep and down you know, the happiness you will get after having that much money is not long-lasting, after somedays you find yourself again surrounded by problems. So what to do, should we leave running after happiness, let's try to find the answer.
Happiness is a state of mind, and our state of mind varies oftenly So as happiness. we can't remain happy all the time, though we always run for happiness. We try to be happy by acquiring the possession on materialistic things by doing hard work and spending day and night, doing stuff what we like to do, and there also people who think that they can be happy by dragging other people down and showing themselves high, but this kind of happiness remain only for short period of time and do more harm after that. Our soul never seeks such kind of happiness it needs something long-lasting and which is not varies.
Joy, on the other hand, in some aspects different from happiness. It is more rooted and internal, joy is an internal state of happiness it is more long-lasting and in which we feel more contented and fulfilled. The various monks and Indian' guru's talk more about joy than happiness, they tell the way to live life more joyfully than happily. We can live life joyfully by working on our internal and root qualities like gratitude, detached ourselves from the fruits of our work, aspecting less and doing more, control over our senses.