pacing issue

I've found that my stories always end up feeling, at least to me, like they aren't going anywhere, or they're going crazy fast. What are some of the best practices you guys have found to write good pacing into your stories?

Context: So some friends and I have been roleplaying in this fantasy world created by one of our group for a while and one day we decided, "Hey, let's turn all this into actual novels!" and for about a month now we've been cracking down on canonizing lore and other stuff as well as adapting our...