I've been a freelancer (sole earner) for many years and never had a big problem budgeting. Then I got divorced, and my income took a hit at the same time. On top of that, I'm required to pay alimony to the tune of several hundred per month. It's calculated on my earnings from two years ago, which are not at all what I'm making now!
Long story short, for at least the next few months I have to be extremely frugal. That's especially tricky when there's no knowing when payments will come in, and not being able to do long-range planning. Any advice for freelancers trying to budget? How long is a piece of string? 