When To Sell A Buy & Hold

[Zackarias Aitchison]

Hey! 

I'm curious about something...

When do you sell a buy & hold? 

Now I know this depends on a lot such as the investor's goals and the property itself, but is there a general rule of thumb you as an investor follow?

Do you sell a buy & hold if it's still cashflowing but has appreciated a massive amount? 

Do you invest in a buy & hold knowing you're going to sell it after X years? If so, how do you come to that number in the first place? 

Cheers!