I don't want to get too deep but I'll say that self-fulfilling prophecy is real. If I was dysfunctional and thrived off negativity, subconsciously, I would keep being attracted to men who would keep affirming my negative thoughts about myself back to me. It still all comes back to me.
Also, if a man like Kent, for instance, believes his height is a problem- not based on what ladies tell him but if that is a deep-rooted belief he has always had, then of course he's going to find himself with ladies who do the same. HE doesn't even appreciate how he is was made...how can he expect someone else?
Additionally, one can't outwardly fake one thing when inwardly another truth has taken root in his mind...we as humans still respond to the energy of others, and though one can fake a smile, he can't fake his aura. So, pretending you have confidence and love for yourself is not going to really work in the long run...he actuslly has to love himself, for real, and it will naturally shine thru.
It is literally as simple as changing his mindset and working within a new mental frame to turn his life around. It's just easier to blame one's issues on someone else than doing the self-reflection and work it requires to rebuild one's life in the way he may want.