answer:To quote the old Nike ad, Just do it! Pick a topic and either get a book on it or look at online lectures. In the area of philosophy, I highly recommend Michael Sandel’s Harvard lectures on justice. Instead of some BS talk about mental health, take a look at Robert Sapolsky’s lectures on human behavioral biology. I have heard good things about Daniel Kahneman’s book Thinking, Fast and Slow, which is on my short list of books to read.