Knowledge and Information:
Separate your information from knowledge. Information is just a tool; it is not something you gather and keep for yourself. Clinging to information is like clinging to the boat even after you have crossed the river. Just imagine how it would look if you were to carry your boat wherever you went, just because it helped you to cross the river.
That is how you are dealing with all the information you have accumulated. You have given so much importance to information that you have built your self-image on it. Your self-image, instead of being firmly rooted in reality, is resting on heaps and heaps of information.
This is the real problem: Because you are convinced that your identity is based on your knowledge, and you have mistaken information for knowledge, you are simply unable to let go of your self-image that is built on this accumulated information.
A lot of times, happiness is simply a consequence of dropping your self-image and blending with the processes of life happening around you. When you are unable to let go of your self-image, you are unable to relax and be happy.
This might sound too simplistic, but that is all there is to personal happiness. It is very easy for you to be happy, but to make your self-image happy is next to impossible. Why? Because your self-image is not real; it is a flimsy unrealistic idea of yourself built on all the information you have gathered.