Michael Cohen told the jury about his 2018 guilty plea for campaign finance violations related to the Stormy Daniels payment, as well as other tax evasion charges.

"What was that day like for you?" prosecutor Susan Hoffinger asked.

"Worst day of my life," Cohen said.

The jury then saw the tweets that then-President Trump posted in August 2018 following Cohen's guilty pleas.

"If anyone is looking for a good lawyer, I would strongly suggest that you don't retain the services of Michael Cohen!" one said.

"It caused a lot of angst, anxiety," Cohen said about the tweets.

Asked to describe his understanding of Trump's message, Cohen said, "Certainly displeasure. That I no longer was important to the fold."

Trump, at the defense table, leaned forward to read his own tweets as they appeared on the monitor.

Cohen told jurors that he reported to federal prison on May 6, 2019. He told the jury he was sentenced to three years in prison, followed by three years of supervised release.

"I apologized to Congress, I apologized to the country, I apologized to my family" in congressional testimony in February 2019 before he reported to prison, because "the citizenry had a right to know in order to make a determination about the individual who was seeking the highest office in the land," he said.

"Did you admit that you paid that money to Stormy Daniels in order to influence Mr. Trump's electoral prospects?" Susan Hoffinger asked Cohen after he finished testifying about his decision to plead guilty to campaign finance and related charges in 2018.

Defense attorney Todd Blanche objected, prompting a sidebar. Judge Merchan sustained the objection.

Cohen reiterated that he paid Stormy Daniels "on behalf of Mr. Trump" to influence the election.

"To ensure that the story would not come out -- would not affect Mr. Trump's chances of becoming president of the United States," Cohen said.

"Why did you work with AMI to pay off Karen McDougal?" Hoffinger asked.

"In order to ensure that the possibility of Mr. Trump succeeded in the election -- that this would not be a hindrance," Cohen said.

Michael Cohen testified that in the summer of 2018, then-President Trump carried out a "pressure campaign" on him through Cohen's then-attorney Robert Costello.

"You are making a very big mistake if you believe the stories these 'journalists' are writing about you. They want you to cave. They want you to fail. They do not want you to preserve and succeed," Costello wrote in an email to Cohen that was shown to the jury. "If you really believe you are not being supported properly by your former boss, then you should make your position known."

Cohen summarized Trump's message as "Don't flip. Don't speak. Don't cooperate."

Cohen testified that he "didn't trust" Costello.

"I believed based upon all of our conversations that he would immediately run back to Mr. Giuliani and that communication would be divulged to Mr. Trump," he said.

"My family -- my wife, my daughter, my son -- all said to me, 'Why are you holding onto this loyalty? What are you doing? We're supposed to be your first loyalty," Cohen testified.

"So what decision did you make?" asked prosecutor Susan Hoffinger.

"That it was about time to listen to them," Cohen said. "To my wife, my son, my daughter, to the country," Cohen said in emotional testimony.

Cohen testified that he pleaded guilty to federal charges in August 2018.

"I would not lie for President Trump any longer," Cohen said.

Jurors saw an April 21, 2018, email where Michael Cohen's attorney at the time, Robert Costello, told Cohen, "Sleep well tonight, you have friends in high places."

"The friend in high places was President Trump," Cohen testified.

"It let me know that I was still important to the team, and stay the course, that the president had my back," Cohen said about Costello's emails.

Jurors then saw another email from Costello dated June 13, 2018.

"Since you jumped off the phone rather abruptly, I did not get a chance to tell you that my friend has communicated to me that he is meeting with his client this evening and he added that if there was anything you wanted to convey, you should tell me and my friend will bring it up for discussion this evening," Costello wrote.

According to Cohen, the aforementioned client was Donald Trump.

Asked about the vagueness of the email, Cohen testified that it was "sort of to be covert -- it is all back channel. Sort of eye spy-ish. Didn't want to put anybody's name."

Jurors then saw a June 2018 email between Cohen and Costello that suggested their relationship had begun to fray.

"I must tell you quite frankly that I am not used to listening to abuse like today's conversation," Costello wrote, referencing an "unfortunate outburst" by Cohen.

"Please remember if you want or need to communicate something, please let me know and I will see that it gets done. I hope I am not wrong but it seems to both Jeff and I that perhaps we have been played here," Costello wrote, referencing the back channel to Trump.

Cohen told the jury he was concerned about his communications with Costello making their way to Trump, and he began looking for other lawyers.

Cohen said Costello was "again pressuring me as he had done with constant calls and sending me emails and so on. He wanted to absolutely be retained to represent me in this matter. He was angered that I was willing to sit down with another attorney but not sit down with them, so I had enough."

When Donald Trump won the 2016 election, Cohen testified there was no role for him in the incoming administration.

"My service was no longer necessary," Cohen said.

He was offered a position in the White House as "assistant general counsel" by Reince Preibus, but turned it down. He said he was disappointed he was not considered for chief of staff.

"I didn't want the role. I didn't believe the role was right for me or that I was even competent to be chief of staff. I just wanted my name to be included," he testified.

"It was more about my ego than anything," Cohen said about his disappointment. "I would have liked to have been considered."

Cohen said he pitched being "personal attorney to the president." He would need the role, Cohen said, because there were "outstanding matters" to be dealt with. Cohen conceded it would have helped him personally and professionally.

"I also had another thought in mind, which was consulting. That's what I really wanted because that afforded me the time to stay at home, in New York," he said.

Cohen testified it could have been lucrative to help people understand Trump's thinking.

"Mr. Trump was an enigma," Cohen said. "Because of my close proximity to him for a decade, I did understand."

"Did you think you could monetize being personal attorney to the president?" prosecutor Susan Hoffinger asked.

"Absolutely," Cohen said.

Trump's eyes remained closed during this portion of the testimony.