A life without any sort of personal growth is destined to be one of stagnation, frustration and a lot of negative energy. People pursue personal development techniques because they are trying to develop strength of character by facilitating their own concious growth. This is a very noble path and is one that will help people to become their best physically, mentally and spiritually with enough time. While results seldom come over night, this is a path that one must be committed to for their entire life.
Trying to spark your own personal development and growth is something that can be done in a variety of ways. Most people start with books, others try to move into attending semiars and growth workshops. The method that you use to achieve personal growth is entirely what works best for you personally. Keep experimenting and see what works the best for you and seems to generate the best results in your life.