I think if you live in a country where psychological services are difficult to access then yes it may help to work on oneself. From my own experience, intelligence and knowledge help very little in the end, it was in the transference where I needed to heal, work on my inability to tolerate ambivalence. I use to buy lots of self help books, and to be honest I can't really remember much about them, all my healing has come from experiencing personally what books were explaining.

Having said this, no one can say what will help another, we all have come from different journeys. I am focused and determined, hence all the monies I've spent so far. But then again I've always been a more introverted kind of person so looking at myself is something I've done naturally.