What does the world need from me?

Yeah, I know- world needs peace. But what can I give to the world? I know many things, I have lots of years of schooling behind me- 23 to be exact. I have a diploma in child and youth care or social pedagogic, have many informal seminars behind me and am finishing my masters degree of family and marriage therapy. For the last 6 years I have worked with troubled youth and children, youth with personality disorders, emotional disorders, families with a history of violence, children with learning disabilities and also for the positive specter- with gifted children. This is my area of expertise.
So, I have a question on my mind. What does the world need from me? My husband told me on many occasions, that me not writing and not counseling is doing damage to the world, because I have all this knowledge and am not sharing to help others. I agree. But when it comes to me actually writing or giving a lecture, my fear comes forward and enables me of really starting. I always start thinking that I really don't know much, and have no idea, what could I possibly contribute to the world.
I am at home with themes such as domestic violence, sexual abuse, upbringing, personality disorders, trouble in marriage and family.
I know that curing personal disorders is something most of the therapists are puzzled about and try to avoid, because these people usually do not gain much from therapy. Mostly because their personality traits are hard to change and furthermore they have probably developed a comorbid disorders or substance abuse. But I have quite some successful cases of helping these children and their families. I mostly use cognitive techniques and try to construct a more organized environment for a child with consequences for their actions and behavior and give parents back their responsibility.
Apart from that I have a gift of motivating people and I think I should open my own counseling office and help people regain their energy and help them get back on the track of their lives.
How's that for a goal? I like it. ;)