Very well explained mash'allah, indeed we are not aware of the consequences of the evil eye which is why we still have tendencies to show what we have, always in need of being a notch up... the ego with in is another problem itself.
How to protect from evil eye- 1) invoke Allahs blessing on the blessing that u receive from Allah 2) do daily morning and evening adkhaars 3) keep ur life private. Private life is a better life. 4) Dont be amazed by ur blessings. 5) if u feel a flame ( of jealousy in ur heart)..u need to fix ur heart to get rid of that feeling 6) do the specific duaa which Prophet did for his grandchildren.
So true 'Ain is exist and it's real. Right now im dealing with this, it's over-hating presence (Hasad) from someone, that can attack us to get anxiety, depressed, Futur (lazy to praying), felt stabbed in the middle on your chest, raise your syahwat and anger. Hopefully Allah Subhanahu Wa Ta'ala protect us from any kind of evil/bad presence that can affect us, aamiin ya rabbal'alamin