Hire To Complement, Not To Duplicate
Despite the temptation to hire someone like yourself, hire someone to complement your skills --not to duplicate your skills.
Managers often find it easier, more comfortable, or less threatening to hire someone with similar skills and work habits. But, to build a well-balanced team and to achieve maximum success, you need to have employees who can fill in your weaker areas.
So, if you are a great idea person, but a poor communicator, hire someone with strong communications skills. Similarly, if your team excels in sales but lacks organization, add an employee who leads in organization skills.
This may all seem like common sense. And you obviously need to hire someone to meet certain/minimum skill sets and who will be a good overall fit. However, do what you can to avoid the trap or temptation to hire someone just like you.