Randall exudes all this bravado at times. He has this "I can handle anything" bit going for him. It's a sham because he knows how fragile he is, deep down. After the break in, he becomes a wreck, completely absorbed with his security system. It is synched with his phone and every time there is the slightest thing happening on the phone, he starts to fall apart. Not a very good thing for a person people need to trust. Of course, we've seen this behavior before and are not surprised. When Malik's father comes to him and admits he has actually been in therapy, he digs down and pulls up his defenses and ignores the advice. His dreams are wiping him out. His running is an interesting metaphor.