While earnings and company plans are important, investors should note that they seldom require your immediate attention and action. Businesses tend to take time to grow and evolve, and when you invest, you should also adopt a long-term mindset. An extended time horizon is necessary to see your investments bear fruit, and is also a key factor in achieving attractive long-term returns. An emotional roller-coasterBeing too fixated on daily share price fluctuations is unhealthy. Share price fluctuations in the short term may not be a good indication of the underlying fundamentals of the business...