The new platform suggests steps people can take to be better prepared for life's ups and downs.
The Duke of Duchess of Cambridge and the Duke and Duchess of Sussex have reunited to help voice a "special film" about mental health in the United Kingdom, just months after famously parting ways from their joint charity.
ITV, Channel 4 and Sky will collaborate in this initiative which will see the film screened live across each network from around 20:45 tonight.
Health officials hope it will empower people to practically manage their symptoms to stop their mental health escalating, which would in time reduce pressure on clinical services and free up capacity.
William and Harry have spoken very candidly since then about the loss of their mother, Princess Diana, in 1997 and how it has affected their mental health in the years since. It's a real privilege to be a part of Every Mind Matters and to stand alongside so many wonderful role models in the film to show anyone who's struggling that they are not alone and there is help out there.
This new resource is available for the public and for Global Positioning System to advise their patients to use. The NHS will also promote Every Mind Matters to its one-million plus workforce.
It says the care of people with diabetes in mental health settings should ensure diabetes care is prioritised.
Prince Harry continues: "We feel stressed, low, anxious or have trouble sleeping". It enables them to create a personalised action plan, recommending a set of self-care actions. But there are simple things you can do to look after yourself. Most people know how important it is to look after their physical health, and more and more people understand the need to look after their mental health as well, but lots of us don't know where to start. Anxiety, stress, low mood and trouble sleeping can affect everyone.
The campaign champions breathing control, physical activity, working on positive relationships and other small-scale steps that can be taken to help yourself move past a dark period.
The royals have been outspoken advocates of increasing mental health awareness and breaking the stigma of mental health since launching Heads Together in May 2016.
48% of people in the West Midlands (45% in Birmingham) who experienced concerns about their mental health avoided social situations or contact from friends and family.
Of those who took action, around a third (31%) only did so when it was having an impact on their daily life.