Stock markets in India are trading near their life-time highs. There is a certain amount of euphoria and positivity in the markets right now. At the same time, the story on the ground is just the opposite. GDP growth is flailing and economic activity is currently lacklustre. At this juncture, the question on everyone’s mind is whether the markets will continue to show strength or will disappointing macro-economic activity lead to a market sell-off? While I have never been one for crystal ball gazing, I do believe that there are certain investing tenets that investors should be cognizant of, at any market level.