If your focusing on just managing yourself, we had lots of advice there, too.

FORBES: Leadership Highlights of the Week: The Best Management Idea of All - Forbes

The other half, which you are managing yourself, will cost only transaction fees, a small sum if you buy and hold.

FORBES: Russian Roulette Investing

You find yourself micro-managing more than you'd like.

ECONOMIST: Human resources

Yet leading for execution is definitely not about micro-managing people or doing it all yourself.

FORBES: Are You an Entrepreneur Who Can Make a Business Fly?

It is possible to handle the letting yourself, but if you do call in a managing agent, it is likely to cost about 15% of your rental income.

BBC: Buy-to-let - the pros and cons

For employers who are having a hard time managing a friend, Shepard, the management consultant, suggests asking yourself this: How would I handle the situation if the employee wasn't a friend?

FORBES: How To Fire A Friend