Hey, Brooklyn Beckham, get your head on straight.

Don’t be like Prince Harry and cut off your family. And certainly don’t do it with a public tantrum, lobbing scathing personal attacks against them.

After all, when it comes to familial ties, Harry is a sad cautionary tale — not a triumphant example of shedding the yoke of familial expectations. 

“I do not want to reconcile with my family,” bratty Brooklyn, 26, wrote in an Instagram screed aimed at his famous parents, David and Victoria Beckham, Monday.

That, of course, would also suggest he is shunning his three younger siblings as well.

“I’m not being controlled, I’m standing up for myself for the first time in my life,” he wrote — referencing web chatter that his wife, Nicola Peltz, was orchestrating the ongoing estrangement. “For my entire life, my parents have controlled narratives in the press about our family.”

Stand up to your parents in the living room, not on Instagram — or, as Harry did, in a grievance-filled memoir and Oprah interview.

Indeed, there are many........

© New York Post