I was quite relieved when I read this paragraph by Marc Andreesen. I have lived this rollercoaster a couple of times and his description is very accurate. It is difficult to internalise these highs and lows and after a while becomes very hard for the entrepreneur. But perhaps more so for their friends and family.

The good thing is, contrary to the firm opinion of my family, it seems I might qualify as "stable" after all.

On a separate point, A16Z have published an e-book from Andreesen's old blogs - it's well written and worth a read.