Anyone with any experience of mental illness will know that it's not always easy to articulate the way you feel.

It can be difficult to communicate with others, and even more difficult -- when you're in the midst of a depressive episode -- to imagine coming out the other side.

But writer Craig Stone has done both of those things.

On Sunday morning, he shared an image of his son taken on the banks of London's River Thames, alongside an uplifting message about depression.

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Stone's tweet has since been shared over 1,700 times. Many people have been responding to say how helpful and inspiring they found his message.

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