Life has it's ups and downs, as you've probably heard before, it has it's challenges, it's joyfulness and it's sorrows. But even in times of despair one should always hope to see that there will be light at the end of the tunnel, that there is hope out there, no matter how far it may seem. That may sound quite cliche, but it's true.
Think about it. What has happened? You've lost your wallet? Your house? Your keys? Your job? Sure, they are all tragic and unfortunate events, but what one should realise is that these are all the 'westernised' lifestyle items that we have come to believe can mean the end of the world for us. As it has been so engrained into us that these things are so important, so precious that without it our life is no good. That isn't true though is it?
I'm sure you still have your loving family, friends, food to eat, a place to stay, and the core elements of human life that ensures your survival. I know it is hard, but if you stay positive and reflect on life as life, i.e. without all these processions and materials that have been accumulated and look at the core parts of your life. Always strive to be grateful and happy for what you have, as at the end of the day, if you do take everything the western world has given you and keep only the core elements of your life (i.e. your family, friends, a home, shelter etc.) then you will find that there is hope and that your worries are only those that society has put forward onto you.
Ultimately, you have everything you truly need and that is where true happiness lies - so be happy :)