How you can learn to control your dreams... and change your life. Doctors now say 'lucid dreaming' techniques can treat phobias, insomnia and even depression - and reveal the cheap supplements that can help you do it ⊖

Throughout his late teens and early 20s, Matthew Humphreys was prone to low moods. He ignored them until, in his mid-20s, the negative thoughts and feelings of emptiness became more pronounced.