What is the ruling on excessively saying "Masha'Allah" due to obsessive-compulsive disorder, and what should be said upon seeing a person of prominence or wealth, and when is "Masha'Allah" said?

It is permissible for a believer to say "Masha'Allah" (as God willed) upon seeing something with which Allah has blessed him or others, citing the Almighty's saying: "And why did you not, when you entered your garden, say, 'What Allah willed [has occurred]; there is no power except in Allah'?" Some of the Salaf (pious predecessors) recommended this to anyone who admired something about himself, his wealth, or his child, as a protection against the evil eye. The weak Hadith, "Whoever sees something and admires it, and says: 'Masha'Allah, la quwwata illa billah' (What Allah willed; there is no power except in Allah), the evil eye will not harm him," is acted upon in matters of فضائل الأعمال (virtuous deeds), especially since its weakness is not severe and it is supported by the Qur'anic verse and the practice of the Salaf.