&#x27;Lost&#x27; is a reasonable diagnosis on its own. Depression takes many forms, but in such a situation is when you cannot bring yourself to face working again (been there).<p>Sounds like you&#x27;ve fallen out of the rhythm of work. In ways, you should count yourself lucky - very few people could afford to take 18 months off work without becoming homeless, so well done with this product you created!<p>Have you learned anything on your time off? Something you could use towards developing a v2.0? You could contact those 10,000 people for feedback on your initial product, see if there are any issues. If you can find a problem you can solve, getting back into work will be a snap.