Great job on achieving your training goal ahead of schedule! It looks like you have been consistent in your training and have performed above our initial prediction. Based on your activity profile and goal we make a prediction of the achievable total training load for the entire training plan. You have reached this training load apparently before the end of your training plan. This is no problem because JOIN will just keeps on scheduling workouts the same way and you will notice that the progress indicator will keep counting above 100%.
For your next goal to keep challenging yourself and continue improving, it is recommended that you select a higher activity profile. Unless you have already set your profile to 'Pro' of course. This will make the progress estimations and total training load prediction to become more challenging. This will keep you motivated to continue making progress. Keep up the hard work and remember to track your progress consistently to see how you are doing.