Most of us are familiar with 'The Incredible Hulk'. It's a story about a scientist, Dr Bruce Banner, who transforms into a big green monster when he gets angry.
In a recent film we see how Dr Banner tries to prevent turning into the Hulk by calming himself down with meditation techniques.
Through deep breathing exercises he tries to stop himself from transforming into the huge green beast.
Unfortunately, meditation alone doesn't seem to do the trick.
Dr Banner also tries various antidote serums but, again, without much success.
In the end, no amount of meditation or medication seems to work.
Every film, comic book and cartoon series of the Incredible Hulk involves a search to control his emotions - or else hell breaks loose.
In many ways, Dr Banner's fictional problem is, man's real problem.
Few of us have discovered how to master ourselves: how to control the beast within us.
More often than not, we allow ourselves to be ruled by our negative emotions.
Unfortunately anger, fear, jealousy, pride, envy, impatience, intolerance, greed - all of these emotions are destructive in nature and undermine the quality of our lives and the lives of those around us.
In fact, it is man's inability to deal with his lower nature that leads to conflict at a national scale - and broken relationships at a family level.
If we really want to gain control of our emotional nature we need to fully understand it.
And to do that we need to learn about our spiritual make-up, too.
Discovering who we really are, why we are here, and the reason why we behave the way that we do is the first step to truly getting to know ourselves - and achieving a greater degree of self-mastery.