I would like to be clear. I am not one of those people who read self-help books or preach about visualising success etc. However, in these times where doom and gloom reign, it is so important to remain optimistic.
I believe that happiness is a state of mind, if you surround yourself with happy people then it rubs off. Happiness is contagious and it is something that should spread. Try treat yourself to something small, at least once a day, it doesn't have to cost anything. Be it an extra hour in bed, watching a movie that you love or having a good laugh with friends, do it! Who cares about getting a few laughter lines? I'd welcome them over frown lines any day.
There are many things to worry about and get stressed over, but in the grand scheme of things, they are barely a blip in a happy lifetime. Focus on the times of fun and frivolity and let the good times roll!