When Mark introduced himself a couple of days ago, he referred to his good friend Sarah, another Moodscope user who also kindly wanted to contribute to the Moodscope messages. Here's Sarah's first message. I do hope you enjoy it. Best wishes. Caroline

I have several friends who use Moodscope, and we each do so differently. One or two find simply reading these daily emails provides sustenance enough. Some do their chart occasionally to touch base with they're at. Whilst others, like me, find regular scoring most useful.

Since I joined two years ago, I've flipped the cards 352 times. My score has ranged from 7%, on a day I felt so hellish my every thought seemed to hurt, to 90%, the day I got married. (If the 7% had been for the day I got married then I really would be worried.) My moods swing from periods when I score in the 30s and 40s to – thankfully longer – periods when I score much higher. When we're down, one of the worst aspects can be feeling we'll never get out of that hole. Here I've found seeing my history heartening – it reminds me I won't be there forever.

I've also shared my chart with others – my doctor, for instance. It provided something tangible to demonstrate what I meant by 'very up and down' and helped him get a picture of my overall mental health. Someone else I know found doing the test regularly revealed her dips were unmistakably linked to her monthly cycle – one week in four, she'd drop from 60% to 35%. Now she's opted for hormone treatment, and lo, her scores are over 60%, 100% of the time. That she's happier thanks to a few cards is flipping wonderful.

If you're someone who only ever reads the emails, perhaps doing the test occasionally might help boost your mood even more. Though feel free to ignore this suggestion. The real joy of Moodscope is its flexibility – it's a tool that adapts to every user. How ingenious is that?