You will never get peace by dwelling upon your conversion—whether it was good or bad—deep or shallow. Neither can you get peace by looking at your state or your progress.
It is very important to judge your state and your walk; but you will never get peace by so doing; nor will you ever make progress by being occupied with yourself—gauging and analyzing your feelings and frames.
The true basis of peace is a full Christ for the heart. The true secret of progress is a whole heart for Christ.