Barbra Streisand accepted the SAG Life Achievement Award for career achievements and humanitarian accomplishments last night and shared some advice from her mom, which she ‘happily’ ignored. The Hollywood icon took to the stage at the Screen Actors Guild Awards to accept the award from Bradley Cooper and Jennifer Aniston, and the moved crowd was left in tears. Barbra Streisand shares mom’s advice that she didn’t listen toAs she took to the stage, the 81-year-old had the celebrity audience going through a roller coaster of emotions, making them laugh, and then cry. Opening up, she joked: “This …