it's happening again

I am starting to feel inadequate at work. Nothing major really, and not like this keeps me up at night, but there have been a few incidents where I am just like, crap I am idiot. I feel like as a consultant, coming into a company I am supposed to know everything. And I feel like that because clients do expect this, as they should - since they pay for our expertise. But some things I am just like come on people, I can't freakin think of everything and manage every damn thing that might be barely related to the project.

I am definitely a lot calmer this time with my first project in a couple of years that requires me to travel. I am less stressful at work and putting limits on how much time I dedicate to work. But these little things still get to me:(