Easier said than done, though
@gregb
Personally speaking, yes, it took time (years) to cultivate the book of clients I have.
Some has been just meeting the right person at the right time, that passes your name on as a referral
Others have been 1 off assignments that the client was happy with the work and continued sending more
There's no "easy way" to finding any good client(s)
And as far as this question, in my opinion, there's 2 answers...
Do you think it's hard to get a work flow going with one?
1) No - it's not "really" hard - some clients (especially AMCs) may offer some kind of "guaranteed" work flow, but usually it comes with (literally!) a cost - I had a "volume guarantee" with ACT appraisal AMC back 5+ yrs ago which offered a "guaranteed" 15 assignments per month, but at a fee of $250 per assignment.
When you do the math, that's a $40k+/yr client, but I also started realizing I was pretty much "giving away/free" every X number of assignments due to the decreased fee
It was "nice" in the fact that the orders were pretty consistent, but ... once I started realizing the "guarantee" wasn't really working in my favor, I started looking toward other/better paying clients
2) Yes - it is hard and takes time/work/networking/being personable .... referrals are a big part of it. Some of my current best clients have come from referrals. Be professional at every inspection. You never know who may refer you to your next client (lender or non-lender)
Good luck