PPC and lack of motivation

Hi all
I have several PPC campaigns that have been profitable in recent months and I have had several that have failed me, however this week I have had a shocking conversions and every morning I wake up to my stats and sometimes start to feel that the previous days sales can ruin or make my day.
When you go on a spiral of a bad few days does it knock your motivation and how do you get over it?.. as I have been getting lots of knock backs and poor days recently which has started to make me lose my focus slightly.
I think part of it is growing too quickly and in some cases above my spending means which is stressing me out the most.
What do you all do to get over the bad converting days especially on a stable campaign?

See original post by carlos247