Lets say you don't do anything about your happiness right now and just let each year go by. A few years later you might find yourself in a worse situation than now and you would be looking back to now and tell yourself 'It was actually quit good back then I had a lot and there was no reason for me to be unhappy'. Too late it has passed and you can do nothing about it. It is never too late and the right time to do something about it is Now.