Just to add to this: I see that you took it down for some valid reasons but don't be dismayed. This is a cool idea, probably not best to be implemented as a product to improve mental health but there's something here. If you find that this has been helping you personally then keep working on it. You may find what you end up building may not be the product you originally envisioned but solving a broader 'technical issue' around language models, perhaps in predicting emotion or understanding the sentiment behind the words.

Overall, I'm just saying often these personal projects don't translate to the public well at first. But eventually you fine tune it for yourself enough and find the true value in it. Then you figure out how to translate that to the public