It depends, I agree with mike1988 if we talk about many money, rich people have problems (yes they have...). Personally I would be more sure in my life if I had enough money to buy a little house or have some money to save, not a lot, but I think that to have something that we consider necessary gives us security.

some times yes some times no ., because I think that is not enough thing to covering all sides of the life , there is more things else ,there is love, friend's relation , believes in god " allah " ,

Vice versa. Money brings people insecurity.