I wouldn't sell them unless you needed the money. Here are some suggestions to slowly get moved into more index funds and minimize taxes/gains:
1) Do you make charitable contributions? Consider opening a Fidelity/Schwab Charitable Fund, its a great way to make your donations via appreciated stock vs. cash.
2) Take all dividends in cash, no reinvestment.
3) Track your tax rates, if you can be in the 10/15% bracket in one year, your gains can be tax-free.
Index funds have tax implications too when you sell, individual stocks allow you to slowly pick and choose which ones you sell and when to take the hit. These are what I like to call #successproblems