Uncertainty causes more anxiety than perhaps any other single factor.

All moods have a cause. If you change the root cause, then your mood will follow suit. Furthermore, mood is a choice. It may not be a completely free choice, but you can choose which mood you spend the most time in.

Postural exercises such as yoga, Pilates, Egoscues, Alexander technique and martial arts are about avoiding pain and injury as much as helping you feel good. Attractive men and women have good posture.

People who relax by watching TV instead of going out to engage with the world tend to be far less energetic. the benefits of exercise in protecting against depression and mental ill-health are huge. Those around you can also affect your energy levels. Self-talk also works wonders on energy levels.

Almost all negative moods are missing one key element - calm. By learning calm, you learn to deal with difficult areas. Calm allows us to achieve what we want, without being overwhelmed by anxiety.

Mood reflects the biology of the brain. How you feel is affected by the chemicals in the brain, and these are the same chemicals that form the basis of mood-altering drugs. You may use yoga, meditation, cognitive behaviour therapy (CBT) or exercise to alter your mood, or revert to healthy eating, regular exercise and getting enough sleep.

Ignoring a problem does not make it go away. In fact, it can simmer away beneath the surface and lead to poor mood and energy levels, and can also cause your moods to become unstable.