Happiness
Everyone wants to be happy.
Muslims believe that Allah gives so much in their lives.
Even in a blink of an eye (imagine if we're not able to do so). Spending a life time
to thank Allah by praying and working is not going to be enough to return the
gift. But this doesn't mean that we don't need to thank Allah. We must be
thankful to what we have. How?! by praying AND using what we have in the right
way. Using what we have in the right way
means that we use our hands to help others, to work hard. Our mouth to be used
to say good and pleasant things, to give advice and to shut up when there is
nothing to say. This also means using our potential in the
right way.
We are also being thankful by doing what Allah tells us to do and avoiding what Allah tells us must not do. Allah tells us to believe in the five articles of Islam and six articles of faith. Not only that, we are asked to respects our parents, to help other, to love our brothers and sisters, to keep studying, to give smiles, to work professionally and so on. We are not allowed to hurt others, to annoys them, to abuse animals, to interrupt a conversation, to cause earth destruction and so forth. Allah will hopefully be pleased by this. Our happiness is found by being faithful to Allah.
After putting so much effort on working, we pray. We put our trust in Allah to take care of the end results and our problems. Praying can be a way to meditate and also a way to 'meet' Allah which is considered as the most delightful thing. We can find peacefulness.
By being faithful to Allah we aim for happy life in this world and hereafter. We also know and value the purpose of our existence. Questions like: What's this universe, Who controls all this in such a fine proportion, Who are we, Who created us, Why are we here, What's life, Is there a life after death, etc, will always exist in this world and Muslims know the answers (from the Qur'an) and that makes them value lives. This adds up to being happy.
ONE CAN BE HAPPY WHEN THERE IS PEACEFULNESS, HOPE, SATISFACTION AND LOVE. Being faithful to Allah leads to all that.