It’s often people’s unrealistic expectation that makes them unhappy. When it comes to investments, some people expect magic to happen :) If done rightly, investments can do wonders but expecting to turn potatoes into gold is only laughable. I encountered a similar incident on Quora where the person wanted to make 1 Crore rupees in 4 years by investing Rs. 25K per month. Following was my mathematical answer to that question.
“To make 1 Crore by investing 25K per month for 4 years, you need your investments to give a return of ~135% per annum. 135% per annum for 4 years is unlikely with any kind of investment.
By investing 25K per month, you will need to invest for about ~12.5 years to accumulate 1 CR provided your investments give a return of 15% per annum.
If you really want to accumulate 1 CR in 4 years, then you will need to invest ~ 170.5K per month at a rate or return of 10% per annum.”