Congrats on only having a mortgage! That's a great first step (I'm not there yet, will be soon). You're not out of debt but at least your remaining debt is substituting for rent which is something student loans or credit card debt don't do.
Different people stay motivated by doing different things. Beyond an FI goal (which, I actually don't have, explicitly) try shorter term goals at budget changes. So for instance we're about to pay off student loans so that is about $1,000 of our budget that will be reprogrammed. While at least $900 of that will end up going towards mortgage or retirement savings we make it negotiable so we can either take a bit for adding to a vacation fund or something else. Even if we put all $1,000 towards savings it has given us another time to reaffirm our high savings and it's not just make a decision now and we can't touch it for 10 years. The same goes any time we get a raise, or when I take in money from side jobs I pick up. I like changing goals based on changes in income / expenses.
I don't really break down my goals too much. I have three goals that I can think of at the moment. Pay off student loans (~1, 5 years), pay off mortgage (6 years) , have enough money to pay current expenses from dividends (whenever the market allows based on maximizing savings). The first two are pretty much governed by strong incentives so I'm not going to be doing more to meet those goals early although I will try to save more. That means in the short term I focus on what I enjoy doing and trying to find non-monetary things or other ways of optimizing. I find it useful to not think of everything in a goal-oriented way while being goal oriented. It's mostly, I live off of x quite well. That allows me to save income minus x. Let's enjoy all that I do with x.