This is a really important starting point when setting goals, and one that fundamentally needs to be answered from a place of honesty. The beautiful thing about exercise is that you are able to intuit progress and see results.
There is however a significant caveat: in fitness the ceiling moves. You can advance beyond your capacity, but only when you no longer accept that your limit is fixed and push for more. This is a defining fact of fitness, but you need to understand how far you can move the dial.