I believe we all know that human needs are numerous but the resources to satisfy them are limited. Based on the question of OP, the only time I will think that I have had enough money is when I no longer struggle to make money when I have made enough investments that is bringing good returns to me and when money works for me and I no longer work for money I believe until I get to this point, I don't think I will say I have had or made enough money. I can also say that I have had enough money if the money I have for my savings is enough to get me all the good things I will ever desire to have till am no longer alive and my next generation will also be comfortable with the savings I have at this point I will also say that I have had enough.