Market volatility is alive and well in 2016. Low oil prices, China's slowing growth, the prospect of rising interest rates, the strong U.S. dollar, global conflicts--all of these factors have contributed to turbulent markets this year. Many investors may be tempted to review their portfolios only when the markets hit a rough patch, but careful planning is essential in all economic climates. So whether the markets are up or down, reviewing your portfolio with your financial professional can be an excellent way to keep your investments on track, and midway through the year is a good time for a reality check. Here are three questions to consider.