Yes, I used to do this ALL THE TIME. Or if a client didn't show and I was left kicking about for a few hours, I'd lose motivation and cancel my remaining clients for the day. It's very easy to fall into this trap then feel sick over how much money has been lost.
The best thing to do, is just whack on with at least one booking, then you will get in the flow and continue. From my experience anyway.
Now, due to a year of working and spending it all (either repaying debts of just shelling out on unnecessary things), I am much more strict with myself as I want to see my hard work pay off when I eventually quit.