I found that dealing with people is the hardest part of any job I've done. Whether working in my day job, project job, side hustle, or anything else.
Vast majority are great and respect you, your time, and your efforts. But there's always a small minority that will make you question your sanity.
We pay many many thousands for consultant that are supposed to be 'experts' in a particular field...trust me when I say I should start my own consulting company because I'm quite sure I know more than them in my field...but because I'm an employee, and not a 'subject matter expert' billing by the hour...anything I say is met with 'cool thanks', and the SME is 'oh my good lord...you're the second coming of christ' mentality.
I understand completely. Never having to have another useless meeting with another ******* "expert" from Deloitte was one of the best perks of going self employed lol