Mental instability is a very challenging. One of the biggest challenges is just finding authority figures to trust. I think when you're a guy as successful as Jachai was in college (1st team All-Pro SEC), who do you have to look up to? who do you feel safe to give the authority to shape you? to be vulnerable with? Who was on that J-E-T-S team that had the chops to tell him what he needed, where to go & what to do as a rookie? When you're unstable you don't trust anyone.
But walking into the Rams D room... you got AD99.... Clay Stinkin' Matthews.... Eric Weddle... all former / current NFL All-Pros themselves at their respective positions... guided under the auspices of all-time great D Coordinator Wade Phillips as well as up & coming DL guru Eric Henderson... and, as icing on the cake, Dante Fowler, a former Gator who's had issues himself but is now thriving in this system....
I mean, what better situation could Jachai walk into? if anything he might feel a bit overwhelmed, so the challenge would be to make him feel welcome as part of the Ramily and show him a roadmap to success so he can see where he will one day thrive on our team, so he can feel safe to fit in & not act out in self-destructive ways in order to sabotage a "too good to be true" situation.