We have established that what goes up, doesn't always come back down again - and that ups and downs are relative. What's 'on the up' in your life,will decide your happiness.Don't dwell on what you can't have, just be glad of what you've got.' , that this is the only advice you require. This didn't please every one. Some felt short-changed. 'What? That's it? Can't he come up with anything more useful to say to me?' But it was the most appropriate advice and it remains so- and indeed, throughout the life. What you've got isn't just enough to compensate for all that you haven't got; it is sufficient, if employed wisely, to allow you to attain whatever you lack.