Justin Bieber woulda had a lot less problems in life ... if his mama woulda dished out a few good ass-whoopings over the years ... so says NFL legend Eric Dickerson.
As you may know, Dickerson is no stranger to Biebs -- they were neighbors in Calabasas and E.D. says he would often see the kid driving dangerously fast around town.
Bieber eventually moved -- and Wednesday night he made a new video explaining that he truly wants to change for the better.
So, does Eric think Bieber has a shot to become a better person?
"It's possible," Dickerson says.
But check out the video -- Dickerson explains why "a good ass whoopin' never hurt nobody" ... and why he believes tough love from a parent made him a BETTER PERSON in the long run.