Honestly, thank you so much for this advice - you've given me a lot to think about. Moving forward, my strategy with applying and accepting jobs will be much different to how it has been. Quality over quantity is always the best way to look at things I guess! Again, thanks for the help!
If I were you, I'd stop looking at your JSS for the next 6 months and just bid like you would if it was at 100%. This way you don't stress over it, you just do your thing and focus on the important things -- $$$$$$$$$
You probably know what client it was and if you feel it was your skills or quality, then you can just focus on that.