In past 2 years what I've hated most is people telling me I should be making lot of money as market is going up since then. In fact it hasn't been that very different than my past performance. 2015 specially was quite bad for my equity investment portfolio as I am overweight some commodity companies in oil & aluminium space which had a terrible year in-spite of Nifty Sensex almost flat. That is exactly the biggest problem with general investors. When market goes up they don't participate cursing the market as gone up so much while when it comes down they wait indefinitely to catch the bottom.
You can make or lose money in any kind of market. So you don't need only a bull market to make money while even a raging bull market can make you lose a great deal of money.
For example in a bull market you lose money if: