Have an Opinion
There is nothing more tiresome than trying to talk to someone who has no opinion on anything. A conversation has nowhere to go if you have nothing to expound on. If, however, you have an uncommon point of view or differing opinion, you are more interesting and stimulating to be with socially (unless you're a know-it-all, of course). A unique outlook expands everyone's perspective.
Having an opinion and being able to confidently put it forward doesn’t just help making your conversations interesting but it also makes you look more influential and well informed around other people. Never shy away from projecting your opinions even if they happen to conflict with those of other people. Be well informed about all the relevant stuff in your surrounding and fell free to have opinions. It will make yourself feel important too.