As a freelancer, you live with feast or famine at times when it comes to workload.
What most people don't get is that we prefer feast! Many would assume that slower times are the best, all the freedom, but not the case! Far better to have much work to do.
I find that in slow times, I never feel totally at ease, even once work is over for the day I find myself still thinking about it, uncomfortable that there wasn't more done, and so never really feel free from the nagging voice that says "Oh no, you should be doing more!"
When work is plentiful, I can sit down in my free time with a feeling of genuine freedom, knowing all is done and on track - and I much prefer that feeling!
I suspect anyone who feels the other way round, just may not be cut out to be a freelancer....