The regular rhythm and upbeat tunes of military music or marching bands positively affect your mood even if you don't actually 'enjoy' listening to it.

Many of our threats are imaginary. The habits and even obsessions that we develop to keep them away are destructive and undermine our moods constantly.

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.

The quickest and easiest way to improve your health and mood is by taking omega 3 supplements, in the form of fish oils or flaxseed. Add a good general multivitamin and mineral daily as well, as this will ensure that any trace deficiencies causing health or mood problems are addressed.

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.

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.

Even a simple imaginary exercise can change your mood: Close your eyes, and take yourself back to your last holiday where there was a lovely warm sun, beautiful sea, relaxed beach and fun meals in the evenings. Open your eyes and consider how you feel now.