Some DIY investors may feel like they are saving money by managing their own investments. But just like with your car, is it smart to be your own mechanic? A lot can go wrong. What might that cost you? And if you found a great mechanic who you trusted, would you ever want to fix your own car again?

From our years of experience, we find many investors who feel they are managing their own portfolios well. But across the board, when we review their portfolios, we find they are missing out for multiple reasons. Here are a few examples:

Successful investing takes patience. There is no Holy Grail or magic, risk-free formula that ensures success and worry-free sleep. In short, investing involves some risk-taking. However, here are six mistakes you can avoid in your investment portfolio.