I have had to search for personal fulfilment because I realised being a wife and mother as a purpose for existence wasn't enough. I had lost myself in there somewhere. I am valuable too. For me, art and learning have provided purpose. I have found groups of people who share my interests and I am now more personally fulfilled than I have ever been in my life.
I love my family of course and they are very important to me, but having them as my sole reason for living (which they were) was empty for me and hard for H in particular.
I think happiness comes with taking care of, and valuing yourself as a person. It can be a long road to get there but it's worth it.