Mental illness is not a good excuse.  For example, Terry Davis wrote an entire operating system from scratch despite having schizophrenia.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;TempleOS" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;TempleOS</a>